- Barns Family Papers, 1816/1899, bulk 1831/18991
- Barraud Family Papers, 1799/1904, bulk 1810/18604
- Barrett Minor Literary collection, 1802/19441
- Barringer Family Papers
ca.
1812-19664
- Barron Family Papers, 1793/19428
- Barry-Parker Family Letters, 1855/18602
- Barton Myers Papers, 1878/19251
- Barton family papers, 1855/18696
- Basil Lanneau Gildersleeve Papers
1799-19893
- Baughman Family Papers, 1837/19683
- Bayles Family Papers, 1827/19451
- Baylor Family Papers
1653-19157
- Baytop-Fitzhugh Papers, 1840/18669
- Beall, Henry, & McClure Families Papers, 1800/19681
- Bean Family Papers, 1833/18871