Philatelic Organizations, Shows, and Auctions
 American Philatelic Society (APS)
The American Philatelic Research Library (APRL)
Joseph Luft's Philatelic Resources
Links to British Colonial Stamp Sites
Mayo Postal History
Worldwide postal history; war covers
NAPEX
Saudi Arabian Philately
The Society for Czechoslovak Philately
Washington Philatelic Society
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