- Wigglesworth, Edward, 1840-1896, author2
- Yarrow, H. C. (Harry Crécy), 1840-19292
- Acevedo, Agustin, author1
- Adams, B. F. D. (Benjamin Faneuil Dunkin), 1839-1895, author1
- Agassiz, Alexander, 1835-19101
- Agassiz, Alexander, 1835-1910, author1
- Alarco, José L. (José Lino), 1835-1903, author1
- Albany Hospital, author.1
- Allen, Nathan, 1813-18891
- Altamirano, Fernando, 1850-1908, author1
- American Academy of Medicine, author.1
- American Public Health Association.1
- Angell, Henry C. (Henry Clay), 1829-1911, author1
- Antisell, Thomas, 1817-1893, author1
- Armstrong, M. F. (Mary Frances), -19031
- Ashhurst, John, 1839-19001
- Atkinson, J. J.1
- Atlee, Washington L. (Washington Lemuel), 1808-18781
- Bailey, John R. (John Read), 1833-1
- Baker, William H. (William Henry), 1845-1914, author1