Postage stamp collecting

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Ebony Society of Philatelic Events and Reflections
A people stamp associations for African-American philatelists and similarly-themed stamps

Gandhi Philatelic Study Circle
A people stamp associations and forum site for members interested in philately with the historical figure Gandhi

Gay & Lesbian History on Stamps Club
A people stamp associations interested in gay and lesbian history depicted on stamps

Succulentophila
Site in German language of a people stamp associations about cacti and other succulent plant philately

Au Cactus Francophone
Site of a people stamp associations dedicated to galleries of cacti and succulent plants on stamps.

The Biology Unit
The people stamp associations named Biology Unit was organized in May 1951 and is dedicated to the international cooperative study of biological postage stamps and related material.