- Abernethy, John, 1764-18311
- Ackley, H. A.1
- Agassiz, Louis, 1807-18731
- Alcott, William A. (William Andrus), 1798-18592
- American Medical Association, author.1
- American Medical Association. Committee on Public Hygiene.1
- Atlee, Washington L. (Washington Lemuel), 1808-18781
- Ayre, Joseph, 1781-18601