- Allom, Thomas, 1804-1872, artist1
- Almasy, Paul, 1906-2003, photographer1
- Alpini, Prosper, 1553-1617, Author4
- Altschuler, Deborah Z.1
- Amato, Cintio d', 17th cent., author9
- American Academy of Allergy and Immunology. Meeting 1990 : Baltimore, Md.)1
- American Psychiatric Association8
- American Public Health Association. Annual Meeting 1992 : Washington, D.C.)1
- American medical association3
- Amesbury, Joseph, 1795-1864, author1
- Amman, Jost, 1539-1591, artist1
- Anderson, Alexander, 1775-18701
- Andrieu, E., author1
- Andriot, F. (François), 1655-1704 author1
- Andry de Bois-Regard, Nicolas, 1658-1742, author1
- Anichini, Ezio, 1886-1948, artist1
- Annin & Smith, engravers.6
- Annin, William B., 1791?-1839, engraver2
- Antonio, Nicolas, 1617-1684, author2
- Arago, Jacques Etienne Victor, 1790-1855, artist1