The World Encyclopedia of Stamps & Stamp Collecting: The Ultimate Illustrated Reference to Over 3000 of the World's Best Stamps, and a Professional ... and Perfecting a Spectacular Collection

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The Secret World of Stamps

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The Official Blackbook Price Guide to United States Postage Stamps 2014

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Warman's U.S. Stamps Field Guide

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Brookman United States, United Nations & Canada Stamps & Postal Collectibles 2002 (Brookman Stamp Price Guide, 2002)