Creator
- Scott, Ann Norvell Otey1
- A La Vieille Russie (Firm)1
- A.G. Spalding & Bros1
- Aaron Siskind Foundation1
- Aaron family1
- Abercrombie & Fitch1
- Academy of Sciences and Fine Arts1
- Ackerson, John Thaddeus, 1898-19751
- Adair, Cornelia Storrs1
- Adam, William R. (William Robert), 1918-19921
- Adams, Floride Harding, 1887-19651
- Adams, John N., Jr. (John Newton)1
- Adams, John Quincy, 1767-18481
- Adamston Flat Glass Company1
- Aero Service Corporation1