- Arthur S. Dayton Correspondence and Catalogs regarding Purchase of Rare Books, 1898/2007, bulk 1923/19598
- Arthurdale Homestead Project Clippings, 1934/19771
- Arthurdale Homestead Project Miscellaneous Papers, 1933/19931
- Arthurdale, West Virginia Scrapbooks, 1935/19751
- Asa Orin Bishop Papers, 1910/19906
- Audiovisual Media Collection, 1975/20051
- Barb Family Papers, 1814/19801
- Barbara Bircher Papers, 1920/19901
- Barbara Howe, History Professor, Research Papers regarding the History of the College of Arts and Sciences, 1870/2005, bulk 1990/20054
- Barnette Collection, Lawyer, Businessman, Educator, Philanthropist, and Chairman Emeritus of Bethlehem Steel Corporation, 1905/20207
- Barns Family Records, 1884/19901
- Beatrice Burgess, Minister, Records, 1929/19931
- Beery School of Horsemanship Publications regarding Horse Training and Other Material, 1883/1976, bulk 1963/19763
- Ben Freedman, Artist and Professor, Papers and Artwork, 1960/200013
- Berlin B. Chapman Papers, 1922/19951