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Académie de Philatélie (FRANÇA) |
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Académie de Philatélie de Belgique (BÉLGICA) |
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Académie Européenne de Philatélie (FRANÇA) |
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American Philatelic Society (EUA) |
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Association Internationale des Éditeurs de Catalogues de Timbres-poste |
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Association Internationale des Experts Philatéliques |
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Fédération Internationale de Philatélie Olympique |
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ISSP - International Society for Portuguese Philately (EUA) |
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Philatelic Computing Study Group (EUA) |
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Philatelic Webmasters Organization (SUÍÇA) |
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The Hong Kong Philatelic Society |
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The International Federation of Stamp Dealers Associations |
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The Royal Philatelic Society of Canada (CANADÁ) |
