| Abelibrary.com A commercial network of nearly independent booksellers specializing in out-of-print, rare, or used books. http://www.abebooks.com/ |
| ABooksearch.com Offers out of print, old, and rare books direct from booksellers. http://www.abooksearch.com/ |
| Alibris Offering out-of-print and rare books through a worldwide network of dealers. http://www.alibris.com/ |
| Bibliopoly Offers a searchable, multilingual database of antiquarian booksellers, rare editions, manuscripts, and more. http://www.bibliopoly.com/ |
| BookSearch Rare and out-of-print book search service. Initiate a search by phone, fax, letter, or email. http://www.booksearch.com/ |
| Booksearch at Hay Specializing in finding used and antiquarian books both online and through book dealers. http://www.booksearch-at-hay.com/ |
| CampusBooks.com Searches the web for the lowest price on new and used textbooks. http://www.campusbooks.com/ |
| Ezra the Bookfinder / Aardvark Booksearch Locating out-of-print, rare, and collectable books. http://www.ezrabook.com/ |
| H.P. Bookfinders Out-of-print bookfinding service. http://www.hp-bookfinders.co.uk/ |
| Internet Book Exchange Provides a search engine and knowledge base for locating new, used, rare, and out-of-print books. http://www.ibookx.com/ |
| ISBN Search Price compare and search for books by ISBN on all major online bookstores. http://www.isbn.nu/ |
| Jim Leftwich Book Searches Searches for out of print books with no obligation to buy. Includes a glossary of book terms. http://www.cloud9.net/ |
| OutofPrint.com Web-based book search service. http://www.outofprint.com/ |
| Skriptoriet International search service for antiquarian and put-of-print books. http://www.skriptoriet.se/ |
| The Omicron Inforium Used by persons with scholarly interests to locate information about books; booknotes are provided by our specialty booksellers. http://www.booknotes.com/ |