- Barns Family Records, 1884/19901
- Brown Family Papers, Photographs and Maps, 1765/19591
- Charles E. Krebs (1870-1954) Papers, 1912/19391
- Gideon D. Camden (1805-1891) Papers, 1784/19581
- Isaac & Josiah Williams Brick Company, Account Books, 1844/19901
- Jim Comstock, Newspaper Editor and Collector, Papers, 1650/2003, bulk 1850/19951
- Lewis Family Papers, 1825/19361
- McIlroy Family Papers, 1829/19431
- Minnie Kendall Lowther Papers, 1907/19451
- Monongah Mine Disaster Papers, 1907/19521
- Nat T. Frame (1877-1948) Papers, 1914/19481
- Peale, Peacock & Kerr Co. Records, 1917/19211
- Samuel R. Jenkins (b. 1870) Diaries and Photographs, 1890/19341
- Thomas Griest World War I collection, 1899/19441
- U.S. Army Corps of Engineers, Photographs of Operations in Pennsylvania, Ohio, New York, and the Pacific Northwest, 1914/19191