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Antiqbook   Balogh Scientific Books
Buchantiquariat   Buchhaus Stern-Verlag Janssen
Camden Books   ebay
Koeltz Scientific Books   Midnight Special Bookstore
NVvA   Newport Book Store
PRB&M   Rutherford's Booksite
Scholars West   Zentrales Verzeichnis Antiquarischer  

ebay - Large Online Auction website. Simple registration required for bidding. Many categories in addition to books. (ebay search tips).
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NVvA, Nederlandsche Vereeniging van Antiquaren, The Dutch Antiquarian Booksellers' Association, founded in 1935 with the object of promoting reliability in the trade of old books and prints.
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ANTIQBOOK
antiquarian booksellers online   ANTIQBOOK, provided by NAN (The Netherlands Antiquarian Booksellers Network).
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Philadelphia Rare Books & Manuscripts Company: Early Printed Books, Substantive Manuscripts. U.S. & Latin America, Mexico & New World Languages, Hispanica, Histories & the History of Ideas, Travels, Law, Religion, & Bibles (all prior to 1820).
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This will find and list all files containing the term(s) of your search. Then you can use your browser's "find" command to search just those pages.

Camden Books, Bath, UK. Antiquarian, Rare & Scholarly Books in Architecture, Civil Engineering, Economics, Philosophy, Physics and Mathematics, Classical, Medieval & Byzantine Studies and History of Art. Established in 1984.
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Balogh Scientific Books
Specializing in natural history books.
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Buchantiquariat "Am Rhein" Regina and Georg J. Beran, Basel, Switzerland.
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Koeltz Scientific Books: academic quality books on botany and zoology
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Midnight Special Bookstore

 located on the Third Street Promenade in Santa Monica, California. Nearly 100,000 titles in stock that you can search and order from with online inventory system.
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Rutherford's Book Shoppe on the Web offers prompt delivery throughout the US on a selection of 500,000 titles in our online catalog, or we will search and special order from a selection of 5 million items available through the BookSite Network.
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Scholars West

 Canada, and of the International League of Antiquarian Booksellers, specializes in academic & general out-of-print titles, with emphasis on philosophy & intellectual history.
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Buchhaus Stern-Verlag Janssen & Co

 In Duesseldorf, where a world of 400,000 volumes is waiting for you -- each ready for browsing or for immediate delivery. A vast range of media services is reflected in the following programme of pages: offers, catalogues, bibliographic databanks, search services for out-of-print titles and, of course, order pages for worldwide acquisitions...
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Zentrales Verzeichnis Antiquarischer Bücher
Hier finden Sie antiquarische Bücher, Autographen, Graphiken, Noten & Schallplatten.
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The Newport Book Store - A full service antiquarian book shop, in business since 1983, specializing in Newport, Rhode Island, New England, Americana, Naval and Military History, Middle East, Intelligence and Espionage and Fine Bindings.
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