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Organized October 8, 1886, continuing the Chicago Stamp Collectors
Union, which was organized December, 1884. The CPS is APS Chapter No.1, and one of the two organizations with the
longest uninterrupted service to philately in the United States.
Welcome to Chicagopex 2009
presented by the Chicago Philatelic Society November
20-22, 2009 at the Sheraton Chicago Northwest, Arlington Heights, IL.
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