The Embury Asbury Hitchcock Papers contain correspondence, department records, such as theses lists and graduate lists, and a history of the Mechanical Engineering Department.

The Francis Leroy Landacre Papers contains Landacre's biography, correspondence, laboratory notebook of drawings, wedding clippings for his daughter, obituaries and memorials, student records, Landacre's wife's will, articles, publications, awards, diplomas, and certificates.

The Frank C. Caldwell Papers contain correspondence, articles, published and unpublished manuscripts, alumni materials from Cornell, materials on the Army Signal Corps, tracings for wiring motors, Prague lectures and letters, OSU Electrical Engineering class of 1929 photographs, broadcasts, reports, Edward Orton commemoration materials and university committee files.

The Herbert Osborn Papers contain professional correspondence related to entomology, biographical information about Herbert Osborn, clippings, and other papers related to Osborn's faculty position and appointment as director of the Ohio Biological Survey.

The Nathaniel Wright and Caroline Augusta Lord Papers contain correspondence, business, professional and legal papers, and other writings by Lord. It also includes creative works, such as poetry, short stories, and essays by Caroline A. Lord.

The Norton S. Townshend Papers contain copies of the following: manuscripts, personal, business and political correspondence, legal documents, a typescript biography of Townshend by his grandson, H. Percy Boynton, correspondence from Townshend to his parents and other family members including Sarah Wood, and letters from relatives in England. It also contains copies of Townshend's correspondence with Salmon P. Chase regarding Ohio political issues, land records for property in Elyria, Ohio, and a microfilm copy of Townshend's Civil War medical officer's file. The collection also contains two copies of a final manuscript by Robert McCormick of a book about Norton Townshend.

The Samuel Carroll Derby Papers contain correspondence, speeches, clippings, and publications by Samuel Derby. The collection also includes family correspondence, photographs and genealogical materials.

The William T. Magruder Papers contain personal and professional correspondence and subject files related to Magruder's research interests and faculty position in mechanical engineering.