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    <eadheader repositoryencoding="iso15511" countryencoding="iso3166-1" dateencoding="iso8601" langencoding="iso639-2b">
        <eadid></eadid>
        <filedesc>
            <titlestmt>
                <titleproper>Guide to the Commonwealth Edison Substation Photographs, circa 1947-1953
                    <num>SPEC.RARE.0377</num>
                </titleproper>
                <author>Finding aid prepared by David Mezick</author>
            </titlestmt>
            <publicationstmt>
                <publisher>Ohio State University Libraries Special Collections</publisher>
                <address>
                    <addressline>1858 Neil Avenue</addressline>
                    <addressline>Columbus, OH, 43210</addressline>
                </address>
                <date>2026 February</date>
            </publicationstmt>
        </filedesc>
        <profiledesc>
            <creation>This finding aid was produced using the Archivists' Toolkit
                <date>2026-02-11T16:00-0500</date>
            </creation>
            <langusage>English</langusage>
            <descrules>Describing Archives: A Content Standard</descrules>
        </profiledesc>
    </eadheader>
    <archdesc level="collection">
        <did>
            <unittitle>Commonwealth Edison Substation Photographs</unittitle>
            <unitid>SPEC.RARE.0377</unitid>
            <repository>
                <corpname>Ohio State University Libraries Special Collections</corpname>
            </repository>
            <langmaterial>
                <language langcode="eng"/>
            </langmaterial>
            <physdesc>
                <extent>0.282 Cubic feet</extent>
            </physdesc>
            <unitdate>circa 1947-1953</unitdate>
            <abstract id="ref87" label="Abstract">As of 2026, Commonwealth Edison continues to be the largest electric utility company in Illinois, and the primary electricity provider in Chicago, Illinois. Substations convert electricity into different voltages so it can be transmitted to the electrical grid and distributed throughout local neighborhoods. The Commonwealth Edison Substation Photographs, dated circa 1947-1953, contain photographs of buildings throughout Chicago, Illinois that house Commonwealth Edison electrical substations. The buildings were designed in a variety of architectural styles, and several were designed by noteworthy Chicago architects and architectural firms.</abstract>
            <physdesc id="ref88" label="Physical Description">(2) flat boxes</physdesc>
            <langmaterial id="ref89" label="Language of Materials">English</langmaterial>
            <origination label="creator">
                <corpname rules="rda" source="naf">Commonwealth Edison Company</corpname>
            </origination>
        </did>
        <arrangement id="ref90">
            <head>Arrangement of Materials</head>
            <p>The Commonwealth Edison Substation Photographs are arranged alphabetically by substation name, followed by substations named after numbered streets (arranged in numerical order).</p>
        </arrangement>
        <acqinfo id="ref91">
            <head>Acquisitions Information</head>
            <p>Accession No. RARE.2026.0014: Purchased, 2022 December</p>
        </acqinfo>
        <prefercite id="ref92">
            <head>Preferred Citation</head>
            <p>[identification of item], Commonwealth Edison Substation Photographs, SPEC.RARE.0377, Rare Books and Manuscripts Library, Ohio State University</p>
        </prefercite>
        <accessrestrict id="ref93">
            <head>Access to Materials</head>
            <p>Materials in this collection are available for use, but may be used in the Thompson Library Special Collections reading room only.</p>
        </accessrestrict>
        <userestrict id="ref94">
            <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>
        <processinfo id="ref95">
            <head>Processing Information</head>
            <p>Processed by: David Mezick, 2026 February; Finding aid written by: David Mezick, 2026 February</p>
        </processinfo>
        <bioghist id="ref96">
            <head>Historical Note</head>
            <p>As of 2026, Commonwealth Edison continues to be the largest electric utility company in Illinois, and the primary electricity provider in Chicago and much of Northern Illinois. The company was established in 1907 after the merger of Chicago Edison and Commonwealth Electric.</p>
            <p>Substations convert electricity into different voltages so it can be transmitted to the electrical grid, distributed throughout local neighborhoods, and into homes, businesses, and other locations. The equipment used to convert the voltages are called transformers. In areas like Chicago, substations are often housed in buildings designed to hide that they hold electrical equipment and to blend with surrounding buildings.</p>
        </bioghist>
        <scopecontent id="ref97">
            <head>Scope and Contents</head>
            <p>The Commonwealth Edison Substation Photographs, dated circa 1947-1953, contain photographs of buildings throughout Chicago, Illinois that house Commonwealth Edison electrical substations. The photographs have captions with the names of the substations, and these captions have been listed in the collection inventory. Each substation is named after the street or neighborhood where it is located. Many of the buildings pictured were designed to hide that they hold electrical equipment and to blend with surrounding buildings. The buildings often include fake doors and windows that provide ventilation. The buildings were designed in a variety of architectural styles in addition to utilitarian brick buildings, such as Prairie School, Classical Revival, Tudor Revival, Art Deco, and mid-century modern. Several buildings pictured were designed by noteworthy Chicago architects and architectural firms. Herman von Host, a notable German architect who was a colleague of Frank Lloyd Wright and worked in the Prairie School style, designed the substations at Carroll Avenue, Kenwood Avenue, South Lowe Avenue, Marquette Park, Washington Park, and others. Holabird &amp; Root, which as of 2026 is one of Chicago’s oldest architectural firms, designed the Garland substation on North Wabash Avenue. Graham, Anderson, Probst, &amp; White, one of the largest architectural firms in Chicago in the early 20th century, also designed one of the substations.</p>
        </scopecontent>
        <odd id="ref98">
            <head>General Note</head>
            <p>Forms part of the Herman J. Albrecht Library of Historical Architecture.</p>
        </odd>
        <controlaccess>
            <corpname rules="rda" source="naf">Commonwealth Edison Company</corpname>
            <subject source="lcsh">Architects--Illinois--Chicago--20th century</subject>
            <subject source="lcsh">Architectural photography--Illinois--Chicago--20th century</subject>
            <subject source="lcsh">Architecture, Industrial--Illinois--Chicago--20th century</subject>
            <subject source="lcsh">Architecture--Illinois--Chicago--20th century</subject>
            <genreform source="aat">Black-and-white prints (photographs)</genreform>
            <subject source="lcsh">City planning--Illinois--Chicago--20th century</subject>
            <subject source="lcsh">Electric substations--Illinois--Chicago--20th century</subject>
            <subject source="lcsh">Electric utilities--Illinois--Chicago--20th century</subject>
        </controlaccess>
        <dsc>
            <c01 id="ref1" level="item">
                <did>
                    <unittitle>Adams Substation</unittitle>
                    <container id="cid20050001" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref2" level="item">
                <did>
                    <unittitle>Austin Substation</unittitle>
                    <container id="cid20050002" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 July 27</unitdate>
                </did>
            </c01>
            <c01 id="ref3" level="item">
                <did>
                    <unittitle>Besly Court Substation</unittitle>
                    <container id="cid20050003" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref4" level="item">
                <did>
                    <unittitle>Brookdale Substation</unittitle>
                    <container id="cid20050004" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 16</unitdate>
                </did>
            </c01>
            <c01 id="ref5" level="item">
                <did>
                    <unittitle>Burnside Substation</unittitle>
                    <container id="cid20050005" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref6" level="item">
                <did>
                    <unittitle>Campbell Substation</unittitle>
                    <container id="cid20050006" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref7" level="item">
                <did>
                    <unittitle>Canal Substation</unittitle>
                    <container id="cid20050007" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref8" level="item">
                <did>
                    <unittitle>Carroll Substation</unittitle>
                    <container id="cid20050008" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref9" level="item">
                <did>
                    <unittitle>Center Substation</unittitle>
                    <container id="cid20050009" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref10" level="item">
                <did>
                    <unittitle>Cheltham Substation</unittitle>
                    <container id="cid20050010" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 14</unitdate>
                </did>
            </c01>
            <c01 id="ref11" level="item">
                <did>
                    <unittitle>Clifton Substation</unittitle>
                    <container id="cid20050011" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref12" level="item">
                <did>
                    <unittitle>Columbus Park Substation</unittitle>
                    <container id="cid20050012" type="Box" label="Graphic materials">1</container>
                    <unitdate>1949 July 5</unitdate>
                </did>
            </c01>
            <c01 id="ref13" level="item">
                <did>
                    <unittitle>Cragin Substation</unittitle>
                    <container id="cid20050013" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 24</unitdate>
                </did>
            </c01>
            <c01 id="ref14" level="item">
                <did>
                    <unittitle>Division Substation</unittitle>
                    <container id="cid20050014" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref15" level="item">
                <did>
                    <unittitle>Farwell Substation</unittitle>
                    <container id="cid20050015" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref16" level="item">
                <did>
                    <unittitle>Fillmore Substation</unittitle>
                    <container id="cid20050016" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref17" level="item">
                <did>
                    <unittitle>Frankline Substation</unittitle>
                    <container id="cid20050017" type="Box" label="Graphic materials">1</container>
                    <unitdate>1948 July 21</unitdate>
                </did>
            </c01>
            <c01 id="ref18" level="item">
                <did>
                    <unittitle>Front Substation</unittitle>
                    <container id="cid20050018" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 16</unitdate>
                </did>
            </c01>
            <c01 id="ref19" level="item">
                <did>
                    <unittitle>Fulton Substation</unittitle>
                    <container id="cid20050019" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref20" level="item">
                <did>
                    <unittitle>Galewood Substation</unittitle>
                    <container id="cid20050020" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref21" level="item">
                <did>
                    <unittitle>Garland Substation</unittitle>
                    <container id="cid20050021" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref22" level="item">
                <did>
                    <unittitle>Goose Island Substation</unittitle>
                    <container id="cid20050022" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref23" level="item">
                <did>
                    <unittitle>Grand Substation</unittitle>
                    <container id="cid20050023" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref24" level="item">
                <did>
                    <unittitle>Grand Substation</unittitle>
                    <container id="cid20050024" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref25" level="item">
                <did>
                    <unittitle>Grand Crossing Substation</unittitle>
                    <container id="cid20050025" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 16</unitdate>
                </did>
            </c01>
            <c01 id="ref26" level="item">
                <did>
                    <unittitle>Harding Substation</unittitle>
                    <container id="cid20050026" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 24</unitdate>
                </did>
            </c01>
            <c01 id="ref27" level="item">
                <did>
                    <unittitle>Harper Substation</unittitle>
                    <container id="cid20050027" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref28" level="item">
                <did>
                    <unittitle>Harrison Park Substation</unittitle>
                    <container id="cid20050028" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 September 28</unitdate>
                </did>
            </c01>
            <c01 id="ref29" level="item">
                <did>
                    <unittitle>Haymarket Substation</unittitle>
                    <container id="cid20050029" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref30" level="item">
                <did>
                    <unittitle>Hegewisch Substation</unittitle>
                    <container id="cid20050030" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 14</unitdate>
                </did>
            </c01>
            <c01 id="ref31" level="item">
                <did>
                    <unittitle>Hermitage Substation</unittitle>
                    <container id="cid20050031" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref32" level="item">
                <did>
                    <unittitle>Hyde Park Substation</unittitle>
                    <container id="cid20050032" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 24</unitdate>
                </did>
            </c01>
            <c01 id="ref33" level="item">
                <did>
                    <unittitle>Irving Park Substation</unittitle>
                    <container id="cid20050033" type="Box" label="Graphic materials">1</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref34" level="item">
                <did>
                    <unittitle>Jefferson Substation</unittitle>
                    <container id="cid20050034" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref35" level="item">
                <did>
                    <unittitle>Kenwood Substation</unittitle>
                    <container id="cid20050035" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref37" level="item">
                <did>
                    <unittitle>Kingsbury Substation</unittitle>
                    <container id="cid20050037" type="Box" label="Graphic materials">1</container>
                    <unitdate>1952 February 11</unitdate>
                </did>
            </c01>
            <c01 id="ref36" level="item">
                <did>
                    <unittitle>Kingsbury Substation</unittitle>
                    <container id="cid20050036" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref38" level="item">
                <did>
                    <unittitle>Laflin Substation</unittitle>
                    <container id="cid20050038" type="Box" label="Graphic materials">1</container>
                    <unitdate>1949 June 14 </unitdate>
                </did>
            </c01>
            <c01 id="ref39" level="item">
                <did>
                    <unittitle>Lake Substation</unittitle>
                    <container id="cid20050039" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref40" level="item">
                <did>
                    <unittitle>Lakeview Substation</unittitle>
                    <container id="cid20050040" type="Box" label="Graphic materials">1</container>
                    <unitdate>1948 April 15</unitdate>
                </did>
            </c01>
            <c01 id="ref41" level="item">
                <did>
                    <unittitle>Lakeview Substation</unittitle>
                    <container id="cid20050041" type="Box" label="Graphic materials">1</container>
                    <unitdate>1948 April 15</unitdate>
                </did>
            </c01>
            <c01 id="ref42" level="item">
                <did>
                    <unittitle>Laramite Substation</unittitle>
                    <container id="cid20050042" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref43" level="item">
                <did>
                    <unittitle>La Salle Substation</unittitle>
                    <container id="cid20050043" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref44" level="item">
                <did>
                    <unittitle>Lawrence Substation</unittitle>
                    <container id="cid20050044" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref45" level="item">
                <did>
                    <unittitle>Lowe Substation</unittitle>
                    <container id="cid20050045" type="Box" label="Graphic materials">1</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref46" level="item">
                <did>
                    <unittitle>Malta Substation</unittitle>
                    <container id="cid20050046" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref47" level="item">
                <did>
                    <unittitle>Marquette Park Substation</unittitle>
                    <container id="cid20050047" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 24</unitdate>
                </did>
            </c01>
            <c01 id="ref48" level="item">
                <did>
                    <unittitle>Marshfield Substation</unittitle>
                    <container id="cid20050048" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 16</unitdate>
                </did>
            </c01>
            <c01 id="ref49" level="item">
                <did>
                    <unittitle>Merrimac Substation</unittitle>
                    <container id="cid20050049" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-19553</unitdate>
                </did>
            </c01>
            <c01 id="ref50" level="item">
                <did>
                    <unittitle>Newport Substation</unittitle>
                    <container id="cid20050050" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 24</unitdate>
                </did>
            </c01>
            <c01 id="ref51" level="item">
                <did>
                    <unittitle>Norwood Park Substation</unittitle>
                    <container id="cid20050051" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref52" level="item">
                <did>
                    <unittitle>Oakland Substation</unittitle>
                    <container id="cid20050052" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 14</unitdate>
                </did>
            </c01>
            <c01 id="ref53" level="item">
                <did>
                    <unittitle>Ohio Substation</unittitle>
                    <container id="cid20050053" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref54" level="item">
                <did>
                    <unittitle>Ontario Substation</unittitle>
                    <container id="cid20050054" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref55" level="item">
                <did>
                    <unittitle>Pershing Substation</unittitle>
                    <container id="cid20050055" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 28</unitdate>
                </did>
            </c01>
            <c01 id="ref56" level="item">
                <did>
                    <unittitle>Plymouth Substation</unittitle>
                    <container id="cid20050056" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref57" level="item">
                <did>
                    <unittitle>Prairie Substation</unittitle>
                    <container id="cid20050057" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref58" level="item">
                <did>
                    <unittitle>Ravenwood Substation</unittitle>
                    <container id="cid20050058" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref59" level="item">
                <did>
                    <unittitle>Rogers Park Substation</unittitle>
                    <container id="cid20050059" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 14</unitdate>
                </did>
            </c01>
            <c01 id="ref60" level="item">
                <did>
                    <unittitle>Roseland Substation</unittitle>
                    <container id="cid20050060" type="Box" label="Graphic materials">2</container>
                    <unitdate>1948 May 14</unitdate>
                </did>
            </c01>
            <c01 id="ref61" level="item">
                <did>
                    <unittitle>Rush Substation</unittitle>
                    <container id="cid20050061" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref62" level="item">
                <did>
                    <unittitle>Sauganash Substation</unittitle>
                    <container id="cid20050062" type="Box" label="Graphic materials">2</container>
                    <unitdate>1951 July 30</unitdate>
                </did>
            </c01>
            <c01 id="ref63" level="item">
                <did>
                    <unittitle>School Substation</unittitle>
                    <container id="cid20050063" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref64" level="item">
                <did>
                    <unittitle>Sedgwich Street Substation</unittitle>
                    <container id="cid20050064" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 28</unitdate>
                </did>
            </c01>
            <c01 id="ref65" level="item">
                <did>
                    <unittitle>South Chicago Substation</unittitle>
                    <container id="cid20050065" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 12</unitdate>
                </did>
            </c01>
            <c01 id="ref66" level="item">
                <did>
                    <unittitle>Southern Supervisory Control Center</unittitle>
                    <container id="cid20050066" type="Box" label="Graphic materials">2</container>
                    <unitdate>1950 August 7</unitdate>
                </did>
            </c01>
            <c01 id="ref67" level="item">
                <did>
                    <unittitle>State Substation</unittitle>
                    <container id="cid20050067" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref68" level="item">
                <did>
                    <unittitle>Throop Substation</unittitle>
                    <container id="cid20050068" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 30</unitdate>
                </did>
            </c01>
            <c01 id="ref69" level="item">
                <did>
                    <unittitle>Vernon Park Substation</unittitle>
                    <container id="cid20050069" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref70" level="item">
                <did>
                    <unittitle>Walton Substation</unittitle>
                    <container id="cid20050070" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref71" level="item">
                <did>
                    <unittitle>Washington Park Distribution Station</unittitle>
                    <container id="cid20050071" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref72" level="item">
                <did>
                    <unittitle>Washtenaw Substation</unittitle>
                    <container id="cid20050072" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref73" level="item">
                <did>
                    <unittitle>Waveland Substation</unittitle>
                    <container id="cid20050073" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 24</unitdate>
                </did>
            </c01>
            <c01 id="ref74" level="item">
                <did>
                    <unittitle>Wendell Substation</unittitle>
                    <container id="cid20050074" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 28</unitdate>
                </did>
            </c01>
            <c01 id="ref75" level="item">
                <did>
                    <unittitle>Whipple Substation</unittitle>
                    <container id="cid20050075" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 19</unitdate>
                </did>
            </c01>
            <c01 id="ref76" level="item">
                <did>
                    <unittitle>Windsor Park Substation</unittitle>
                    <container id="cid20050076" type="Box" label="Graphic materials">2</container>
                    <unitdate>1948 May 14</unitdate>
                </did>
            </c01>
            <c01 id="ref77" level="item">
                <did>
                    <unittitle>Wrightwood Substation</unittitle>
                    <container id="cid20050077" type="Box" label="Graphic materials">2</container>
                    <unitdate>1948 April 21</unitdate>
                </did>
            </c01>
            <c01 id="ref78" level="item">
                <did>
                    <unittitle>E. 16th Street Substation</unittitle>
                    <container id="cid20050078" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 28</unitdate>
                </did>
            </c01>
            <c01 id="ref79" level="item">
                <did>
                    <unittitle>17th Street Substation</unittitle>
                    <container id="cid20050079" type="Box" label="Graphic materials">2</container>
                    <unitdate>1949 September 19</unitdate>
                </did>
            </c01>
            <c01 id="ref80" level="item">
                <did>
                    <unittitle>27th Street Substation</unittitle>
                    <container id="cid20050080" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 28</unitdate>
                </did>
            </c01>
            <c01 id="ref81" level="item">
                <did>
                    <unittitle>56th Street Substation</unittitle>
                    <container id="cid20050081" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June</unitdate>
                </did>
            </c01>
            <c01 id="ref82" level="item">
                <did>
                    <unittitle>62nd Street Substation</unittitle>
                    <container id="cid20050082" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 September 28</unitdate>
                </did>
            </c01>
            <c01 id="ref83" level="item">
                <did>
                    <unittitle>63rd Street Substation</unittitle>
                    <container id="cid20050083" type="Box" label="Graphic materials">2</container>
                    <unitdate>circa 1947-1953</unitdate>
                </did>
            </c01>
            <c01 id="ref84" level="item">
                <did>
                    <unittitle>82nd Street Substation</unittitle>
                    <container id="cid20050084" type="Box" label="Graphic materials">2</container>
                    <unitdate>1947 June 16</unitdate>
                </did>
            </c01>
            <c01 id="ref85" level="item">
                <did>
                    <unittitle>111th Street Substation</unittitle>
                    <container id="cid20050085" type="Box" label="Graphic materials">2</container>
                    <unitdate>1948 May 7</unitdate>
                </did>
            </c01>
            <c01 id="ref86" level="item">
                <did>
                    <unittitle>119th Street Substation</unittitle>
                    <container id="cid20050086" type="Box" label="Graphic materials">2</container>
                    <unitdate>1948 May 7</unitdate>
                </did>
            </c01>
        </dsc>
    </archdesc>
</ead>
