- Albert L. Sturm Papers, 1904/19881
- Alfred C. Payne Collection, 1917/20031
- Ann A. Hertzler Collection, 1863/2013, bulk 1974/20001
- Arthur M. Squires Papers, 1888/1987, bulk 1940/19871
- Byron Nelson Cooper Papers, 1925/19711
- Carol M. Newman, Jr., Papers, 1930/19871
- Carrie T. Sibold Family Papers, 1912/1990, bulk 1974/19901
- College of Agriculture and Life Sciences (CALS) Collection,, 1900/20011
- Dayton M. Kohler Papers, 1889/19711
- Diploma Collection, 1877/19641
- Edgemont Farm Papers, 1925/19981
- Erwin Hoge Will Papers, 1918/19731
- Frank Horsfall, Jr., Papers, 1917/19731
- Frank J. Maher Papers, 1934/19861
- G. Burke Johnston Papers, 1900/19931