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- Architects Collaborative, Inc.1
- Ardalan, Nader1
- Arquitectonica (Firm)1
- Ashley, Warren1
- Auden, W. H. (Wystan Hugh), 1907-19731
- Avery Library1
- Avery Library. Department of Drawings & Archives1
- Azuma, Takamitsu, 1933-20151
- Baker, David, 1949-1
- Balmori, Diana1
- Banque Lambert (Brussels, Belgium)1
- Barnes, Edward Larrabee, 1915-20041
- Barsac, Jacques1
- Bartos, Armond1
- Bartók, Béla, 1881-19451
- Barzun, Jacques, 1907-20121
- Becket, Welton1
- Beinecke Rare Book and Manuscript Library1
- Beinecke, Frederick W.1