- Weeks-Shaw, Clara S.5
- Weir, Robert F. (Robert Fulton), 1838-19275
- Wells, P. P. (Phineas Parkhurst), -1891, author5
- William R. Warner & Co.5
- Wormley, Theodore G. (Theodore George), 1826-1897, author5
- Wyman, Morrill, 1812-1903, author5
- Wythe, J. H. (Joseph Henry), 1822-19015
- Yale, Leroy Milton, 1841-1906, author5
- Zahorsky, John, 1871- , author5
- Abbott, Frank, 1836-1897, author4
- Adler, I. (Isaac), 1849-19184
- Agassiz, Alexander, 1835-19104
- Allen, Harrison, 1841-1897 author4
- Allibone, S. Austin (Samuel Austin), 1816-1889 compiler4
- Allport, W. W. (Walter Webb), 1824-18934
- American Medical Association.4
- American Public Health Association.4
- Anders, James M. (James Meschter), 1854-1936 author4
- Arnold, Edmund S. F. (Edmund Samuel Foster), 1820-19074
- Arnold, J. L. (John L.)4