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Author/Creator
- Smithsonian Institution. Board of Regents30
- United States. Congress. House30
- Bacon, Francis, 1561-162617
- Lankester, E. Ray (Edwin Ray), Sir, 1847-192913
- ebrary, Inc12
- Smithsonian Institution11
- Academy of Natural Sciences of Philadelphia9
- Wesley, John, 1703-17919
- Nicholson, William, 1753-18158
- United States. Congress. Senate8
- American Museum of Natural History7
- Museu Nacional (Brazil)7
- Adam Matthew Digital (Firm), digitiser6
- British Museum (Natural History). Library6
- Naturforschende Gesellschaft in Basel6
- Schweizerische Naturforschende Gesellschaft6
- Sparn, Enrique6
- Wakefield, Priscilla, 1751-18326
- Binet, Etienne, 1569-16395
- California Academy of Sciences5