Postalhistory.com is resource for collectors of United States and worldwide covers and postal history. The site offers over 145.000 covers for sale. The focus is on U.S. town cancels, U.S. 20th century postal history, U.S. and worldwide military, worldwide 20th century and U.S. and worldwide international airmail. Reference material includes market and bibliographic data, an on-line copy of A Price Guide To U.S. A.P.O. Cancels of the Second World War and an online database of every U.S. post office ever in existence with the dates of operation.

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