Barnes and Noble - Travel books available at B&N
Frommer's - Guides for traveling almost every country.
Hunter Publishing: Travel Guides to the World - Hunter Publishing's online bookstore resource for up-to-the-minute travel guides to the Caribbean, U.S., Europe, Central & South America and more!
Powell's books- Travel books available from Powell's Books
Amazon.com - Travel books available in the following categories: General, Africa, Asia, Audiobooks, Australia & South Pacific, Book Bargains, Canada, Caribbean, Europe, Guidebook Series, Latin America, Middle East, Polar Regions, Specialty Travel, United States