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POLICY FOR CHECKLIST USE. All American Topical Association (ATA) checklists are the property of the ATA, intended for use by members and to promote topical collecting. These checklists are copyrighted and are not to be copied except by the ATA for distribution to its members. Portions of a checklist may be used as part of a philatelic article or column if credit is given to the American Topical Association. While every effort is made to provide accurate and timely checklists, the ATA cannot guarantee that these checklists are complete or error free. Questions on the use of a checklist should be directed to the ATA Office. Members finding errors or omissions are encouraged to send amending information to the ATA Office to improve upon this members-only service. Please use the Stamp ID number in the first column of each list to reference suggested changes.