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A. A. Wilson - English and American Literature, Modern First Editions, Reference, and Military History.

A.B.Normal Books - Modern 1st edition and limited edition science fiction, fantasy, horror, related young adult and reference books.

ABookLegacy - Mostly out of print non-fiction books; Americana, genealogy, history, military, and general subjects.

Adams Used Books - Second-hand cross stitch patterns, books, and magazines including hard to find and out-of-print.

Adrian Harrington - Specialising in literature, modern first editions and bound library sets; fine and rare books in all fields. Based in London, UK.

Alfearare Rare Books - Specializing in rare books, incunabula, manuscripts, old maps and printings; biligual, English and Italian.

Alibris - Used, hard-to-find, and new books.

All Vintage Bookstore - Online bookstore of vintage and collectable books. Specialties include children's books.

Alsworth Book Corner - Used and out-of-print books.

Ambrosia Books - Antiquarian and out of print books, specialist in biography, Australian history, women's interest, crime fiction and juvenile.

Anasazi Books - Used and collectible books. Romance and other fiction.

And Books Too - Used books; searchable and categorised.

Anglophile Books - Secondhand books; specializing in British women authors, books for Anglophiles, and Women's studies and history. Also offers a book search.

Antic Hay Books - Used, rare and first edition fiction, poetry, drama and autographs.

Antiquariaat Colombine - Titles on Amsterdam, art, philosophy; also in Dutch.

Antiquariaat Vanhove - Used and antiquarian academic books.

Antiquarian Books's Cyberstore - A database holding the stock of a selected number of dealers; buy and sell antiquarian books.

Antiquarian Bookstore - Used, out-of-print, rare, and antiquarian books.

The Antiquarian Shop - Specializing in rare and unusual antiquarian books, maps, and autographs in every field of interest.

Antiquariat Daniel Good - Offers rare books, prints, engravings, and maps. Includes owner's profile.

Antiquariat Turszynski - Rare and valuable books from 16th to 19th century. Much of the site is in German, but English translation available for those areas.

Anton W. van Bekhoven - Books on art, architecture, art history bibliography and typography, history, philosophy, Middle Ages. Includes book lists and request form.

Any Amount Of Books - Rare books, first editions, modern literature, art, poetry, scholarly/academic books, antiquarian, leather bound sets, general stock.

Arca Books - Hard to find, out of print, used, and rare books on a variety of topics.

Argonaut Book Shop - California history and the American West. Other specialties include Pacific voyages, art, and Western private press books.

Asher Rare Books - Rare books and atlases, specialties include travel and botany.

Attic Books - Used and out-of-print books. Search by author, title or keyword.

Atticus - Used books and music.

Augustine Funnell Books - Collectible books and magazines, including mystery, horror, nonfiction, fiction, children's, Canadian.

Aussie Books - Australian books and out-of-print books, sorted by category and searchable.

Authors & Artists - Specializing in modern firsts, signed and limited editions, authors' early works, earth sciences, Native American, mythology and antiquarian. Includes company profile.

Azorabooks - Out-of-print book service specialising in new naturalists and natural history titles. Includes signed editions.