- Barraud Family Papers, 1799/1904, bulk 1810/18601
- Barron Family Papers, 1793/19421
- Barry S. Martin collection of historical manuscripts and documents, 1771/18302
- Baylor Family Papers
1653-19156
- Bell, Kent, Cloyd, Withrow Family Collection, 1780/19988
- Benjamin Layman Papers, 1752/18152
- Benjamin Owen Tyler calligraphic manuscript and Fenno family papers, 1770/18161
- Benjamin Stoddert Ewell Papers, 1784/1934, bulk 1830/18923
- Berkeley County (W.Va.) Land Tax Books, 1788/17931
- Berkeley Family Papers
1536-present1
- Berkeley or Jefferson County Store Ledger, 1784/17991
- Betty Washington Lewis family papers, 1783/18441
- Bevill Family Papers, 1558/1939, bulk 1558/17071
- Bigler-Sessler-John Family Papers, 1752/19252
- Bishop James Madison Collection, 1776/18071