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    <eadheader findaidstatus="Completed" repositoryencoding="iso15511" countryencoding="iso3166-1" dateencoding="iso8601" langencoding="iso639-2b">
        <eadid url="https://library.osu.edu/finding-aids/ead/UA/RG.40.61.xml">2016-09-13</eadid>
        <filedesc>
            <titlestmt>
                <titleproper>Guide to the Dan McLachlan, Jr. Papers, 1905-1978
                    <num>RG.40.61</num>
                </titleproper>
                <author>Finding aid prepared by Zoe MacLeod</author>
            </titlestmt>
            <editionstmt>
                <p>15020216</p>
            </editionstmt>
            <publicationstmt>
                <publisher>Ohio State University Libraries Special Collections</publisher>
                <address>
                    <addressline>1858 Neil Avenue</addressline>
                    <addressline>Columbus, OH, 43210</addressline>
                </address>
                <date>2016 September</date>
            </publicationstmt>
            <seriesstmt>
                <p>b21734987 catalog record needs to be overlaid.</p>
            </seriesstmt>
        </filedesc>
        <profiledesc>
            <creation>This finding aid was produced using the Archivists' Toolkit
                <date>2019-05-13T11:27-0400</date>
            </creation>
            <langusage>English</langusage>
            <descrules>Describing Archives: A Content Standard</descrules>
        </profiledesc>
    </eadheader>
    <archdesc level="recordgrp">
        <did>
            <unittitle>Dan McLachlan, Jr. Papers</unittitle>
            <unitid>RG.40.61</unitid>
            <repository>
                <corpname>Ohio State University Libraries Special Collections</corpname>
            </repository>
            <langmaterial>
                <language langcode="eng"/>
            </langmaterial>
            <physdesc>
                <extent>5.2 Cubic feet</extent>
            </physdesc>
            <unitdate>1905-1978</unitdate>
            <abstract id="ref118" label="Abstract">Dan McLachlan, Jr. was a professor emeritus of Geology and Mineralogy at Ohio State University. The Dan McLachlan, Jr. Papers contain correspondence and publications.</abstract>
            <physdesc id="ref112" label="Physical Description">(4) cartons; (1) 5" letter document box</physdesc>
            <langmaterial id="ref102" label="Language of Materials">English</langmaterial>
            <origination label="creator">
                <persname rules="rda" source="naf">McLachlan, Dan, 1905-</persname>
            </origination>
        </did>
        <arrangement id="ref2">
            <head>Arrangement of Materials</head>
            <p>Materials are arranged in the order received.</p>
        </arrangement>
        <acqinfo id="ref108">
            <head>Acquisitions Information</head>
            <p>Accession Number UA.1975.0076; Accession Number UA.1982.0032: American Institute of Physics</p>
        </acqinfo>
        <prefercite id="ref4">
            <head>Preferred Citation</head>
            <p>[identification of item], Dan McLachlan, Jr. Papers, RG 40.61, Ohio State University Archives, Ohio State University</p>
        </prefercite>
        <accessrestrict id="ref116">
            <head>Access to Materials</head>
            <p>Materials in this collection are available for patron research, but may be used only in the University Archives Reading Room. Some materials in this collection may be stored off-site, and are only available if requested 72 hours in advance of your visit. Contact the University Archives for more information.</p>
        </accessrestrict>
        <userestrict id="ref103">
            <head>Use of Materials</head>
            <p>Materials in this collection may be protected by copyright, and are made available for research and educational purposes. In general, the OSU Libraries do not own the copyright for materials from our collections and cannot grant copyright permissions for these materials. The user is responsible for making a final determination of copyright status. If copyright protection applies, permission must be obtained from the copyright holder to reuse, publish, or reproduce the work beyond the bounds of fair use or other exceptions to the law. Works in the public domain are not protected by copyright and do not require permission to use.</p>
        </userestrict>
        <bioghist id="ref113">
            <head>Biographical Note</head>
            <p>Dan McLachlan, Jr. (1905-1982) was a professor emeritus of Geology and Mineralogy at Ohio State University.</p>
        </bioghist>
        <scopecontent id="ref101">
            <head>Scope and Contents</head>
            <p>The Dan McLachlan, Jr. Papers contain xeroxed copies of correspondence, consulting fees and contracts, expense accounts, military papers, and publications.</p>
        </scopecontent>
        <relatedmaterial id="ref114">
            <head>Related Materials</head>
            <list type="deflist">
                <defitem>
                    <label>Ohio State University Archives Biographical Files</label>
                    <item>Dan McLachlan, Jr.</item>
                </defitem>
            </list>
        </relatedmaterial>
        <controlaccess>
            <persname rules="rda" source="naf">McLachlan, Dan, 1905-</persname>
            <corpname rules="rda" source="naf">Ohio State University--Faculty.</corpname>
            <corpname rules="rda" source="naf">Ohio State University--History.</corpname>
            <corpname rules="rda" source="local">Ohio State University. Department of Geology and Mineralogy.</corpname>
            <subject source="lcsh">College teachers--Ohio--Columbus--20th century</subject>
            <subject source="lcsh">Mineralogy--Study and teaching (Higher)--Ohio--Columbus--20th century</subject>
            <genreform source="aat">Publications (documents)</genreform>
        </controlaccess>
        <dsc>
            <c01 id="ref5" level="series">
                <did>
                    <unittitle>Processed</unittitle>
                    <physdesc>
                        <extent>5.2 Cubic feet</extent>
                    </physdesc>
                    <unitdate>1905-1978</unitdate>
                    <physdesc id="ref117" label="Physical Description">(4) cartons; (1) 5" letter document box</physdesc>
                </did>
                <c02 id="ref6" level="file">
                    <did>
                        <unittitle>Biographical Files (2 folders)</unittitle>
                        <container id="cid717038" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1905-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref7" level="file">
                    <did>
                        <unittitle>Cards; Humor</unittitle>
                        <container id="cid717037" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1938-1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref8" level="file">
                    <did>
                        <unittitle>Consulting Fees; Contracts</unittitle>
                        <container id="cid717036" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1959-1965</unitdate>
                    </did>
                </c02>
                <c02 id="ref9" level="file">
                    <did>
                        <unittitle>Correspondence, General: A</unittitle>
                        <container id="cid717035" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1950-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref10" level="file">
                    <did>
                        <unittitle>Correspondence, General: B (3 folders)</unittitle>
                        <container id="cid717034" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1940-1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref11" level="file">
                    <did>
                        <unittitle>Correspondence, General: C (3 folders)</unittitle>
                        <container id="cid717033" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1946-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref12" level="file">
                    <did>
                        <unittitle>Correspondence, General: D</unittitle>
                        <container id="cid717032" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1936-1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref13" level="file">
                    <did>
                        <unittitle>Correspondence, General: E</unittitle>
                        <container id="cid717031" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1947-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref14" level="file">
                    <did>
                        <unittitle>Correspondence, General: F</unittitle>
                        <container id="cid717030" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1948-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref15" level="file">
                    <did>
                        <unittitle>Correspondence, General: G</unittitle>
                        <container id="cid717029" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1947-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref16" level="file">
                    <did>
                        <unittitle>Correspondence, General: H (2 folders)</unittitle>
                        <container id="cid717028" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1946-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref17" level="file">
                    <did>
                        <unittitle>Correspondence, General: I</unittitle>
                        <container id="cid717027" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1948-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref18" level="file">
                    <did>
                        <unittitle>Correspondence, General: J</unittitle>
                        <container id="cid717026" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1949-1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref19" level="file">
                    <did>
                        <unittitle>Correspondence, General: K (2 folders)</unittitle>
                        <container id="cid717025" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1935-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref20" level="file">
                    <did>
                        <unittitle>Correspondence, General: L</unittitle>
                        <container id="cid717024" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1950-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref21" level="file">
                    <did>
                        <unittitle>Correspondence, General: M, (3 folders)</unittitle>
                        <container id="cid717023" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1946-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref22" level="file">
                    <did>
                        <unittitle>Correspondence, General: N</unittitle>
                        <container id="cid717022" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1949-1966</unitdate>
                    </did>
                </c02>
                <c02 id="ref23" level="file">
                    <did>
                        <unittitle>Correspondence, General: O</unittitle>
                        <container id="cid717021" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1942-1958, 1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref24" level="file">
                    <did>
                        <unittitle>Correspondence, General: P</unittitle>
                        <container id="cid717020" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1947-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref25" level="file">
                    <did>
                        <unittitle>Correspondence, General: R</unittitle>
                        <container id="cid717019" type="Box" label="Mixed Materials">UA.RG.40.61.0001</container>
                        <unitdate>1949-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref26" level="file">
                    <did>
                        <unittitle>Correspondence, General: S (3 folders)</unittitle>
                        <container id="cid717018" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1940-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref27" level="file">
                    <did>
                        <unittitle>Correspondence, General: T</unittitle>
                        <container id="cid717017" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1951-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref28" level="file">
                    <did>
                        <unittitle>Correspondence, General: U</unittitle>
                        <container id="cid717016" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1945, 1961, 1966</unitdate>
                    </did>
                </c02>
                <c02 id="ref29" level="file">
                    <did>
                        <unittitle>Correspondence, General: V</unittitle>
                        <container id="cid717015" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1952-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref30" level="file">
                    <did>
                        <unittitle>Correspondence, General: W (2 folders)</unittitle>
                        <container id="cid717014" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1946-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref31" level="file">
                    <did>
                        <unittitle>Correspondence, General: Y</unittitle>
                        <container id="cid717013" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1959-1966</unitdate>
                    </did>
                </c02>
                <c02 id="ref32" level="file">
                    <did>
                        <unittitle>Correspondence, General: Z</unittitle>
                        <container id="cid717012" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1949-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref33" level="file">
                    <did>
                        <unittitle>Correspondence, General: American Crystallographic Association</unittitle>
                        <container id="cid717011" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1958, 1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref34" level="file">
                    <did>
                        <unittitle>Correspondence, General: Buerger, Martin J. (Ph.D.)</unittitle>
                        <container id="cid717010" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1947-1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref35" level="file">
                    <did>
                        <unittitle>Correspondence, General: Chamberlain, Louise (Laurie) L.</unittitle>
                        <container id="cid717009" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1956-1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref36" level="file">
                    <did>
                        <unittitle>Correspondence, General: Champagne, E. F.</unittitle>
                        <container id="cid717008" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1948-1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref37" level="file">
                    <did>
                        <unittitle>Correspondence, General: Christ, Charles L. (Ph.D.)</unittitle>
                        <container id="cid717007" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1947-1959</unitdate>
                    </did>
                </c02>
                <c02 id="ref38" level="file">
                    <did>
                        <unittitle>Correspondence, General: Day, David A. (Dean, University of Denver)</unittitle>
                        <container id="cid717006" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1961-1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref39" level="file">
                    <did>
                        <unittitle>Correspondence, General: Denver, University of</unittitle>
                        <container id="cid717005" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1961-1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref40" level="file">
                    <did>
                        <unittitle>Correspondence, General: Denver, University of, (Large Notebook)</unittitle>
                        <container id="cid717004" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>undated</unitdate>
                    </did>
                </c02>
                <c02 id="ref41" level="file">
                    <did>
                        <unittitle>Correspondence, General: Eyring, Henry (Ph.D., University of Utah)</unittitle>
                        <container id="cid717003" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1952-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref42" level="file">
                    <did>
                        <unittitle>Correspondence, General: Fankuchen, I. (Professor, Polytechnic Institute of Brooklyn)</unittitle>
                        <container id="cid717002" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1946-1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref43" level="file">
                    <did>
                        <unittitle>Correspondence, General: Hutchison, Dale H.</unittitle>
                        <container id="cid717001" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1959-1975</unitdate>
                    </did>
                </c02>
                <c02 id="ref44" level="file">
                    <did>
                        <unittitle>Correspondence, General: Johnson, Jr., Shirley A. (Ph.D., Director of Denver Research Institute)</unittitle>
                        <container id="cid717000" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1961, 1962</unitdate>
                    </did>
                </c02>
                <c02 id="ref45" level="file">
                    <did>
                        <unittitle>Correspondence, General: Kell, Robert W. (Patent Counsel, American Cyanamid Company, N.Y.)</unittitle>
                        <container id="cid716999" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1950-1953</unitdate>
                    </did>
                </c02>
                <c02 id="ref46" level="file">
                    <did>
                        <unittitle>Correspondence, General: Lewis, John R, (Ph.D., Department of Metallurgical Engineering, University of Utah)</unittitle>
                        <container id="cid716998" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1948-1956</unitdate>
                    </did>
                </c02>
                <c02 id="ref47" level="file">
                    <did>
                        <unittitle>Correspondence, General: Linford, Leon B. (Ph.D., Physics Department, University of Utah)</unittitle>
                        <container id="cid716997" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1950-1955, 1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref48" level="file">
                    <did>
                        <unittitle>Correspondence, General: Lonsdale, Kathleen (Professor, Univeristy of London, England) (2 folders)</unittitle>
                        <container id="cid716996" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1963-1971</unitdate>
                    </did>
                </c02>
                <c02 id="ref49" level="file">
                    <did>
                        <unittitle>Correspondence, General: Murray, Elwood (Ph.D., Department of Speech, University of Denver)</unittitle>
                        <container id="cid716995" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1963-1965</unitdate>
                    </did>
                </c02>
                <c02 id="ref50" level="file">
                    <did>
                        <unittitle>Correspondence, General: Olpin, A. Ray (Ph.D., President, University of Utah)</unittitle>
                        <container id="cid716994" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1951-1953</unitdate>
                    </did>
                </c02>
                <c02 id="ref51" level="file">
                    <did>
                        <unittitle>Correspondence, General: Parrish, William (Ph.D., Phillips Laboratories, N.Y.)</unittitle>
                        <container id="cid716993" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1945-1966</unitdate>
                    </did>
                </c02>
                <c02 id="ref52" level="file">
                    <did>
                        <unittitle>Correspondence, General: Patterson, Arthur Lindo (Ph.D.)</unittitle>
                        <container id="cid716992" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1948-1951</unitdate>
                    </did>
                </c02>
                <c02 id="ref53" level="file">
                    <did>
                        <unittitle>Correspondence, General: Pepinsky, Ray (Professor of Physics)</unittitle>
                        <container id="cid716991" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1947-1950</unitdate>
                    </did>
                </c02>
                <c02 id="ref54" level="file">
                    <did>
                        <unittitle>Correspondence, General: Perdue, James E. (Dean, Arts and Sciences College, University of Denver)</unittitle>
                        <container id="cid716990" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1961-1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref55" level="file">
                    <did>
                        <unittitle>Correspondence, General: Poulter, Thomas C. (Ph.D.)</unittitle>
                        <container id="cid716989" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1951-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref56" level="file">
                    <did>
                        <unittitle>Correspondence, General: Reeber, Robert R. (Ph.D., OSU Department of Mineralogy)</unittitle>
                        <container id="cid716988" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1968-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref57" level="file">
                    <did>
                        <unittitle>Correspondence, General: Scott, Thomas J. (Metro Industries)</unittitle>
                        <container id="cid716987" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1953</unitdate>
                    </did>
                </c02>
                <c02 id="ref58" level="file">
                    <did>
                        <unittitle>Correspondence, General: Stanford Research Institute</unittitle>
                        <container id="cid716986" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1954, 1957-1960</unitdate>
                    </did>
                </c02>
                <c02 id="ref59" level="file">
                    <did>
                        <unittitle>Correspondence, General: Thurston, J. T. (Ph.D., American Cyanamid Company, N.Y.)</unittitle>
                        <container id="cid716985" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1949</unitdate>
                    </did>
                </c02>
                <c02 id="ref60" level="file">
                    <did>
                        <unittitle>Correspondence, General: Wood, Elizabeth A. (Ph.D., Bell Telephone Laboratories, N.J.)</unittitle>
                        <container id="cid716984" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1948-1968</unitdate>
                    </did>
                </c02>
                <c02 id="ref61" level="file">
                    <did>
                        <unittitle>Correspondence, General: Wyckoff, R. W, (Professor)</unittitle>
                        <container id="cid716983" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1947-1960</unitdate>
                    </did>
                </c02>
                <c02 id="ref62" level="file">
                    <did>
                        <unittitle>Deep-Field Microscopy: Correspondence; Notes, News (#1 of 4 folders)</unittitle>
                        <container id="cid716982" type="Box" label="Mixed Materials">UA.RG.40.61.0002</container>
                        <unitdate>1963-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref63" level="file">
                    <did>
                        <unittitle>Deep Field Microscopy: Correspondence; Notes; News (#2,3,4, of 4 folders)</unittitle>
                        <container id="cid716981" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1963-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref64" level="file">
                    <did>
                        <unittitle>Deep Field Microscopy: Photos; Negatives</unittitle>
                        <container id="cid716980" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1968, 1970</unitdate>
                    </did>
                </c02>
                <c02 id="ref65" level="file">
                    <did>
                        <unittitle>Expense Accounts; Travel Itinerary and Pay</unittitle>
                        <container id="cid716979" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1948-1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref66" level="file">
                    <did>
                        <unittitle>"From Zero To Seventy-Two", by Dan McLachlan, Jr.</unittitle>
                        <container id="cid716978" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1978</unitdate>
                    </did>
                </c02>
                <c02 id="ref67" level="file">
                    <did>
                        <unittitle>Military Papers</unittitle>
                        <container id="cid716977" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1942</unitdate>
                    </did>
                </c02>
                <c02 id="ref68" level="file">
                    <did>
                        <unittitle>Ohio State University, Department of Mineralogy</unittitle>
                        <container id="cid716976" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1965-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref69" level="file">
                    <did>
                        <unittitle>Patents</unittitle>
                        <container id="cid716975" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1952-1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref70" level="file">
                    <did>
                        <unittitle>Personal Papers</unittitle>
                        <container id="cid716974" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1947, 1957-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref71" level="file">
                    <did>
                        <unittitle>Publications; Papers (3 folders)</unittitle>
                        <container id="cid716973" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1948-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref72" level="file">
                    <did>
                        <unittitle>Publications; Papers (#1 and II of 3 large Notebooks)</unittitle>
                        <container id="cid716972" type="Box" label="Mixed Materials">UA.RG.40.61.0003</container>
                        <unitdate>1948-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref73" level="file">
                    <did>
                        <unittitle>Publications; Papers (#111 of 3 large Notebooks)</unittitle>
                        <container id="cid716971" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1948-1969</unitdate>
                    </did>
                </c02>
                <c02 id="ref74" level="file">
                    <did>
                        <unittitle>Publications; Papers: Physical Properties of Metals -- Battelle Lecture Series</unittitle>
                        <container id="cid716970" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1963</unitdate>
                    </did>
                </c02>
                <c02 id="ref75" level="file">
                    <did>
                        <unittitle>Publishing Companies: Addison-Wesley Press, Inc. (Cambridge, Mass.) -- Correspondence</unittitle>
                        <container id="cid716969" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1954-1956</unitdate>
                    </did>
                </c02>
                <c02 id="ref76" level="file">
                    <did>
                        <unittitle>Publishing Companies: McGraw-Hill Book Company, Inc. (New York)</unittitle>
                        <container id="cid716968" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1949-1967</unitdate>
                    </did>
                </c02>
                <c02 id="ref77" level="file">
                    <did>
                        <unittitle>Publishing Companies: Prentice-Hall, Inc. (New York)</unittitle>
                        <container id="cid716967" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1954-1956</unitdate>
                    </did>
                </c02>
                <c02 id="ref78" level="file">
                    <did>
                        <unittitle>Publishing Companies: Reinhold Publishing Corporation (New York)</unittitle>
                        <container id="cid716966" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1966</unitdate>
                    </did>
                </c02>
                <c02 id="ref79" level="file">
                    <did>
                        <unittitle>Tol's Toy: A Game</unittitle>
                        <container id="cid716965" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1958, 1959</unitdate>
                    </did>
                </c02>
                <c02 id="ref80" level="file">
                    <did>
                        <unittitle>Deep-Field Microscopy: Photos; Negatives (3 folders)</unittitle>
                        <container id="cid716964" type="Box" label="Mixed Materials">UA.RG.40.61.0004</container>
                        <unitdate>1968, 1970</unitdate>
                    </did>
                </c02>
                <c02 id="ref81" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "A"</unittitle>
                        <container id="cid716963" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716963" type="Folder">1</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref82" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "B"</unittitle>
                        <container id="cid716962" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716962" type="Folder">2</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref83" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "C"</unittitle>
                        <container id="cid716961" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716961" type="Folder">3</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref84" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "D"</unittitle>
                        <container id="cid716960" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716960" type="Folder">4</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref85" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "E"</unittitle>
                        <container id="cid716959" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716959" type="Folder">5</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref86" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "F"</unittitle>
                        <container id="cid716958" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716958" type="Folder">6</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref87" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "G"</unittitle>
                        <container id="cid716957" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716957" type="Folder">7</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref88" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "H"</unittitle>
                        <container id="cid716956" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716956" type="Folder">8</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref89" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "I-J"</unittitle>
                        <container id="cid716955" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716955" type="Folder">9</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref90" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "K"</unittitle>
                        <container id="cid716954" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716954" type="Folder">10</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref91" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "L"</unittitle>
                        <container id="cid716953" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716953" type="Folder">11</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref92" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "M"</unittitle>
                        <container id="cid716952" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716952" type="Folder">12</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref93" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "N-O"</unittitle>
                        <container id="cid716951" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716951" type="Folder">13</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref94" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "P"</unittitle>
                        <container id="cid716950" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716950" type="Folder">14</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref95" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "Q-R"</unittitle>
                        <container id="cid716949" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716949" type="Folder">15</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref96" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "S"</unittitle>
                        <container id="cid716948" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716948" type="Folder">16</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref97" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "T"</unittitle>
                        <container id="cid716947" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716947" type="Folder">17</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref98" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "U-V"</unittitle>
                        <container id="cid716946" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716946" type="Folder">18</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref99" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "W"</unittitle>
                        <container id="cid716945" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716945" type="Folder">19</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
                <c02 id="ref100" level="file">
                    <did>
                        <unittitle>Letters to McLachlan, "Y-Z"</unittitle>
                        <container id="cid716944" type="Box" label="Mixed Materials">UA.RG.40.61.0005</container>
                        <container parent="cid716944" type="Folder">20</container>
                        <unitdate>1940-1974</unitdate>
                    </did>
                </c02>
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