- BLSA: Black Law Students Association records3
- Baba Freeman Reston, Virginia collection10
- Baba Freeman Reston, Virginia, collection1
- Barbara Abernathy papers12
- Barbara Cary Johnston Willard Scrapbook1
- Barbara H. Dunn Papers7
- Barbara Howe, History Professor, Research Papers regarding the History of the College of Arts and Sciences3
- Barbara McKnight Benham papers2
- Barnette Collection, Lawyer, Businessman, Educator, Philanthropist, and Chairman Emeritus of Bethlehem Steel Corporation25
- Barton Myers III Papers2
- Base Hospital No. 41 collection1
- Baseball records2
- Ben Benson Collection1
- Benjamin C. Howland papers1
- Benjamin Huddle Diary2