- Alexander, John, 1891-19541
- Allen, Charles J.1
- Allen, Edgar van Nuys, 1900–19611
- Allison, Philip1
- Altvater, F. Vernon1
- Alvarez, Walter C. (Walter Clement), 1884-1
- Alyea, Edwin P., 1898-1
- Ambulatory Surgical Procedures.3
- American Academy of Physicians' Associates1
- Amos, D. Bernard (Dennis Bernard), 1923-20032
- Amputation1
- Anatomy21
- Anderson, Alexander, 1775-18701
- Anderson, W. Banks (William Banks), 1897-19771
- Andrews, E. Wyllys (Edward Wyllys)1
- Andrews, Edmund1
- Anemia1
- Anesthesia3
- Animal Husbandry1
- Animal Technicians.1