Booksellers

Abebooks
Online marketplace for new and used, rare, and out-of-print books. A subsidiary of Amazon.com based in Victoria, BC.

AddALL Used and Out of Print Book Search
Search a variety of booksellers' web sites at once. Includes Abebooks, Alibris, Amazon and Powell's.

Alibris
Searchable database of the combined offerings of independent sellers of new and used books, music, movies, and rare and collectible titles.

Amazon.com and Amazon.ca
Onilne seller of books, music, films, video games and other items. Maintains separate sites in the U.K., France, Germany and several other countries.

Barnes & Noble
Online seller of books, music, fims, video games and other items.

Bernard Quaritch Ltd.
Antiquarian book seller since 1847 (British)

Bibliofind
Searchable database of millions of rare, used, and out-of-print books. Partners with Amazon.com.

BookFinder
Searches over 150 million books for sale—new, used, rare, out-of-print, and textbooks written in English, French, German, Italian and Dutch from booksellers in over 50 countries.

Canadian Booksellers Association's Find a Bookstore
A national not-for profit trade association representing trade, campus and independent booksellers in all provinces and territories.

Chapters.Indigo.ca
Online seller of books, music, films as well as millions of out-of-print, rare and gently used books.

IndieBound  
A community-oriented movement begun by the independent bookseller members of the American Booksellers Association, Indiebound links to hundreds of independent bookstore websites across the US.  Also includes some Canadian independent booksellers. 

Marelibri
Searches databases of independent antiquarian and modern booksellers.

viaLibri
Similar to AddALL but with more search options, including the ability to search by publication year.

Publishers

AcqWeb's Directory of Publishers & Vendors

Alternatives in Print
A directory of alternative periodicals and book publishers. The directory is a combination of two former print resources, Annotations (a directory published by the Alternative Press Centre) and Alternative Publishers of Books in North America (APBNA) which was compiled by Byron Anderson.

Canadian ISBN Service System
Contains name and contact info. for most Canadian publishers; searchable by name, city, province, and ISBN.

Index Translationum: International Bibliography of Translations
Database of books translated and published in about 100 of UNESCO's Member States since 1979 and totalling some 1,900,000 notices in all disciplines.

International Publishers & Vendors
From Auburn U. Libraries

Periodicals Service Company & Schmidt Periodicals GmbH
Provides info on reprints and back issues of out of print journals.

PubList: an International Periodicals Directory
Online directory providing information about journals and other periodicals (including publisher addresses, editor contacts, and circulation data).

Ulrich's Periodicals Directory
A bibliographic database providing detailed, comprehensive, and authoritative information on serials published throughout the world. Details provided include publisher contact info., price, indexing, if refereed, open access, etc.