- Balogh Scientific Books
 - Bookseller and distributor of natural history books, particularly in the fields of botany, zoology, ecology and geology. - Capricornica Publications Natural History Books
- Site features a searchable database of natural history books and guides.
- Gary Wayner, Bookseller
- Scholarly, new, and antiquarian natural history books.
- Natural History Book Service
- Specialist mail-order environmental bookstore offers NHBS Booknet a searchable catalogue of over 40,000 books and other materials.
- Patricia Ledlie Bookseller, Inc.
- Online catalogue of conservation biology, environmental science, and natural history books.
- Raymond M. Sutton, Jr.
- Antiquarian books on natural history.
- Sapsucker Books
- Online catalogue of used, out-of-print, hard-to-find and selected new natural history books.
- Summerfield Books
- Specialists in botany, forestry, and related natural history.
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