- Antibiotics1
- Biogeography -- History1
- Biology -- Classification1
- British Ornithologists' Union -- History1
- Brooks, William Keith, 1848-19081
- Color of animals1
- Darwin, Charles, 1809-1882 -- Influence1
- Domestication -- History -- 20th century1
- Entomologists -- Biography1
- Fiske, John, 1842-19011
- Ibis1
- Jordan, Karl, 1861-19591
- Krasheninnikov, Stepan Petrovich, 1713-17551
- Marine Biological Station of San Diego (Calif.)1
- Natural history -- Russia -- 18th century1
- Needham, John Turberville, 1713-17811
- Oregon Academy of Science1
- Ornithologists -- Great Britain -- Biography1
- Paleobotany -- History -- 19th century1
- Ritter, William Emerson, 1856-19441