- B. P. Blasingame Papers, 1962/19781
- Bailey-Law Collection, 1825/197138
- Baker Family Genealogy, 1933/19701
- Ball Family Papers, 1887/19763
- Ballard Hartwell Cabell collection, 1915/19691
- Baltimore Woman's Committee for Cuban Freedom, 1961/19656
- Baltimore and Ohio Railroad, Monongah Division, Seniority Rosters, 1962/19641
- Barb Family Papers, 1814/19801
- Barbara Bircher Papers, 1920/19901
- Barbara Brodie Nursing History Collection Additions, 1890/19891
- Barbara Brodie Nursing History Collections, 1900/20001
- Barbara Cary Johnston Willard Scrapbook, 1800/20061
- Barbara Howe, History Professor, Research Papers regarding the History of the College of Arts and Sciences, 1870/2005, bulk 1990/20054
- Barbara L. Bishop Collection, 1965/19901
- Barbara Lustbader New York City playbills collection, 1957/201223