- Ambrose L. Snavely Papers, 1903/19521
- Andrew Jackson Dadisman (1881-1965), Agricultural Economics Professor, Papers, 1914/19631
- Barns Family Records, 1884/19901
- Beery School of Horsemanship Publications regarding Horse Training and Other Material, 1883/1976, bulk 1963/19761
- Carleton Custer Pierce (1877-1958) Papers, 1840/19551
- George W. Johnson (1837-1902) Papers, 1860/19601
- Izetta Jewel Brown Miller (b.1883), Clippings and Photographs, 1908/19731
- Jacob H. Gerbrick, Photographer, Records, 1857/19741
- Joanna Nesselroad Papers, 1930/19951
- John Jacob Cornwell (1867-1953), Governor, Papers and Records, 1843/19531
- Kemble White (1873-1965) Papers, 1898/19651
- Maxwell Family Papers, 1845/2017, bulk 1845/19501
- Nathan Ochs Family Papers, 1813/1970, bulk 1884/19241
- New Farmers of America, Maryland Association Records, 1928/19601
- Oscar Clemens Stine Interview Transcript, 1884/19511