- Ann A. Hertzler Collection, 1863/2013, bulk 1974/20001
- Arthur M. Squires Papers, 1888/1987, bulk 1940/19871
- Charles E. Vawter Family Collection, 1882/19131
- Claudius Lee Papers, 1887/19541
- Dayton M. Kohler Papers, 1889/19711
- Diploma Collection, 1877/19641
- Earl A. Thornton Papers, 1885/20001
- Ellison A. Smyth, Jr. Papers, 1859/19271
- Harvey Lee Price Papers, 1853/19491
- Herschel Gustave Anderson Elarth Papers, 1885/19881
- Horatio Seymour Stahl Papers, 1881/19371
- James H. Lane Research Collection, 1865/19911
- James I. Robertson Jr. Papers, 1849/20111
- Jean Haskell-Speer Papers, 1782/1995, bulk 1983/19931
- John M. and Cora Bolton McBryde Family Papers, 1862/20181