- Carol M. Newman Papers, 1897/19581
- Carol M. Newman, Jr., Papers, 1930/19871
- Carrie T. Sibold Family Papers, 1912/1990, bulk 1974/19901
- Charles Burchard Collection, 1935/19891
- Charles S. Worley, Jr., Collection, 1950/19821
- Christopher C. Kraft Papers, 1941/1998, bulk 1941/19821
- Clarence Paul Miles Papers, 1902/19601
- Clarence Trent Papers, 1958/19911
- Clinton H. Cowgill Collection, 1916/19771
- College of Agriculture and Life Sciences (CALS) Collection,, 1900/20011
- College of Home Economics Metabolism Study Collection, 1956/19601
- Conan W. Vaughan, Jr., Papers, 1923/19921
- Dan H. Pletta Papers, 1942/19961
- Dayton M. Kohler Papers, 1889/19711
- Dean Carter Papers, 1950/2003, bulk 1964/19821