Aerogramme Society
American Air Mail Society
American Philatelic Congress
American Philatelic Society
American Society of Netherlands Philately
American Stamp Dealers Association
Association of Essex Philatelic Societies - UK
Associazione Filatelica Numismatica Bolognese - Italy
Australian Philatelic Federation
Basildon Philatelic Society - UK
British Aerophilatelic Federation
British Caribbean Philatelic Study Group
British North America Philatelic Society
British Postmark Society
Canadian Forces Philatelic Society - Canada
Centennial Stamp Club - Canada
Champaign-Urbana Stamp Club
Chess on Stamps Study Unit
China Stamp Society
Clermont County Stamp Club - Ohio
Confederate Stamp Alliance
Cover Collector's Circuit Club
Creative Retirement Stamp Club - Canada
Danish Postal History Society
DeutchePhilatelisten-Jugend e.v. - Germany
Erie Philatelic Association
Euclid Stamp Club - Ohio
Fellowship of Samoa Specialists
Forschungsgemeinschaft Kanalinseln & Insel Man - Germany
Garfield-Perry Stamp Club
Gibraltar Philatelic Society
Gibraltar Study Circle
Great Britain Collectors Club - US
Great Britain Philatelic Society - UK
Hamilton Philatelic Society - Canada
Hampshire Philatelic Federation - UK
Hawaiian Philatelic Society - Hawaii
High Wycombe and District Philatelic Society - UK
Hong Kong Stamp Society
Indiana Stamp Club - Indiana
International Association for Philatelic Exhibitors - Australia
International Society for Japanese Philately
International Society of Worldwide Stamp Collectors
Irish Airmail Society
Junge Briefmarkenfreunde Koblenz e.V. - Germany
Kongsberg Philatelistklubb - Norway
Liverpool Philatelic Society - UK
Malaya Study Group
National Philatelic Society - UK
National Stamp Dealers Association
New Zealand Society of Great Britain
Ohio Postal History Society
Orange Free State Study Circle
Pacific Islands Study Circle
Pacific Northwest Postal History Society
Philatelic Computing Study Group
Philatelic Federation of Finland - Finland
Philatelic Youth of Norway - Norway
Philatelic Youth of Sweden - Sweeden
Pitcairn Islands Study Group
Postal History - Australia
Postal Stationery Society of Australia - Australia
Raflet Stamp Club - UK
Rhode Island Philatelic Society - Rhode Island
Rhodesian Study Circle- Rhodesia
RoadRunner Stamp Club - Arizona
Rochester Philatelic Association - New York
Romsey and District Philatelic Society - UK
Royal Philatelic Society of New Zealand - New Zealand
Ryukyu Philatelic Society
Sacramento Philatelic Society - California
St. Helena, Ascension, and Tristan Da Cunha Philatelic Society
Scandinavia Philatelic Society
Ships on Stamps Unit of the ATA
Society of Australasian Specialists/Oceania
State Revenue Society - US
Swedish Philatelic Federation - Sweden
Thematics Queensland - Australia
Tonga & Tin Can Mail Study Circle
Tughra Society - UK
United Postal Stationery Society - US
US Philatelic Classics Society, Inc.
University City Stamp Club - California
Verein f|r Briefmarkenkunde W|rzburg von 1880 e.v. - Germany
Welsh Philatelic Society - UK
West Africa Study Circle
Wichita Stamp Club - Kansas
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