- Architectural Drawings: architectural drawings2
- Architectural drawings184
- Architectural drawings (visual works)15
- Architectural drawings (visual works).49
- Armorial bookplates1
- Armorial bookplates (Provenance)--CtY-BR2
- Artifacts349
- Artificats1
- Artists' books9
- Artists' books--California--Santa Cruz--20011
- Artists' books--France--Anduze--19621
- Artists' books--France--Paris--1964-19661
- Artists' books--Oregon--Portland--2009.1
- Artists' books.1
- Astronomical charts2
- Atlases1
- Atlases--Connecticut--Bridgeport--19131
- Authors' inscriptions2
- Autographs37
- Banners--English--20th century1
Libraries & Collections
- Arts Library
- Bass Library
- Beinecke Library
- Classics Library
- Divinity Library
- Film Study Center
- Fortunoff Archive
- Humanities Collections
- International Collections
- Law Library
- Lewis Walpole Library
- Library Collection Services
- Manuscripts & Archives
- Map Collection
- Marx Science & Social Science Library
- Medical Library
- Music Library
- Sterling Library
- Yale Center for British Art
