- Barns Family Papers, 1816/1899, bulk 1831/18991
- Beall, Henry, & McClure Families Papers, 1800/19681
- Bessie Rowland James Papers, 1800/19722
- Bluestone Baptist Church Records, 1803/18561
- Boots (Steiffel) and Peterson (Biedert) Families Genealogies, 1771/19851
- Bowers Family Genealogy, 1823/19571
- Boyce Family in West Virginia, Genealogical Research Material, 1790/20001
- Boyers Morgan Clark, Compiler, Genealogy Records, 1660/19551
- Bradford Laidley Papers, 1755/19911
- Brady Family Typescripts, 1816/19661
- Braxton County (W. Va.) Court Records and Miscellaneous Papers, 1830/19535
- Brooke County (W. Va.) Court Records and Miscellaneous Papers, 1780/191859
- Brooke Family Papers, 1814/1990, bulk 1880/19601
- Brooks F. McCabe, Collector, Papers, 1770/20191
- Brown Family Papers, Photographs and Maps, 1765/19591