- Allen Family Papers, 1766/19332
- Ancella Bickley, Historian, Research Papers regarding African-Americans, 1775/2018, bulk 1970/20114
- Anthony Ware, Miscellaneous Papers, 1773/18861
- Ashcraft Family Genealogy, 1732/19721
- Aurora, Preston County Papers, 1754/19001
- Boots (Steiffel) and Peterson (Biedert) Families Genealogies, 1771/19851
- Boyers Morgan Clark, Compiler, Genealogy Records, 1660/19551
- Bradford Laidley Papers, 1755/19911
- Brooke County (W. Va.) Court Records and Miscellaneous Papers, 1780/191810
- Brooks F. McCabe, Collector, Papers, 1770/20191
- Brown Family Papers, Photographs and Maps, 1765/19591
- Byer Family Genealogy, 1726/19381
- Charles Shetler, Curator and Historian, Papers, 1700/19651
- Christ Reform Church of Shepherdstown, West Virginia, Records, 1779/19571
- Churches of Somerset County, Pennsylvania, Records, 1775/19331