Offers used, new, and rare books about birds and ornithology.

Antiquarian and interesting out-of-print medical books; specializing in the history of medicine and pharmacy.

Used, rare and scholarly natural history books with an emphasis on botany.

Second-hand books in geology and palaeontology.

Old, rare and second hand books and prints on botany, gardens, horticulture, and agriculture. based at The Hague, Netherlands.

Used and out-of-print scientific, technical and scholarly books.

Rare and hard to find books, especially ornithology and herpetology.

Specializes in old and rare medical books; based in Memphis, Tennessee, books bought and sold.

Out-of-print ornithology books and journals. Some back issues of hard-to-find journals.

Antiquarian and secondhand books on agriculture, farm livestock, dogs, and horses.

Specializing in psychology, psychiatry, psychoanalysis, neuroscience and all aspects of the study of the mind and brain. Catalogues issued periodically and upon request in all fields of specialty.

Books and other media on carnivorous plants, book search service, and a list of books on the subject. [English, German]

Old, rare, and out-of-print books in medicine, surgery, and related fields.