- Bradford Laidley Papers, 1755/19911
- Bradley T. Johnson Papers
1676-19373
- Brady Family Papers, 1750/19801
- Brafferton Estate Collection, 1691/19352
- Brainard Charlton Collection of Colonial and Continental Paper Money, 1775/17802
- Bray Papers, 1730/18174
- Brooke County (W. Va.) Court Records and Miscellaneous Papers, 1780/191811
- Brooks F. McCabe, Collector, Papers, 1770/20191
- Brown Family Papers, Photographs and Maps, 1765/19591
- Brown, Coalter, Tucker Papers (I), 1790/19299
- Bruton Parish Church (Williamsburg, Va.) records, 1662/2010, bulk 1900/20003
- Bryan Family Papers, 1780/18252
- Bucktrout-Braithwaite Papers, 1780/1996, bulk 1890/18993
- Bushrod Washington family papers, 1662/183514
- Byer Family Genealogy, 1726/19381