- Melsens, Louis Henri Frédéric, 1814-1886, author2
- Morse, Edward Sylvester, 1838-1925, author2
- Noyes, Henry D. (Henry Drury), 1832?-1900, author2
- Ollivier, Auguste, 1833-1894, author2
- Ray, Isaac, 1807-18812
- Sands, Henry B. (Henry Berton), 1830-1888, author2
- Seguin, E. C. (Edward Constant), 1843-18982
- Sturgis, F. R. (Frederic Russell), 1844-1919, author2
- Academy of Natural Sciences of Philadelphia, author.1
- Académie de médecine (France), author.1
- Aguirre y Valdés, Pedro, author1
- Aikin, William E. A., 1807-18881
- Allen, Nathan, 1813-1889, author1
- Altamirano, J. M., author1
- American Medical Association, author.1
- American Pharmaceutical Association, author.1
- American Public Health Association.1
- Atkinson, William B. (William Biddle), 1832-19091
- Atlee, Washington L. (Washington Lemuel), 1808-18781
- Attfield, John, 1835-1911, author1