Nonprofit society promoting stamp collecting worldwide. Offers free educational brochures and stamp store for buying and selling stamps.

Original artwork commissioned by the U.S.Postal Service for stamps. View annotated images of stamps of individuals and objects associated with sports, arts and entertainment, transportation, history and exploration, and literature.

Offers images, descriptions and valuations of US and UK historical stamps. Information on fake, forged and cancelled stamps.

Contains the postage stamps bearing President Franklin Roosevelt's designs along with other items from his personal philatelic collection. From the Smithsonian National Postal Museum.

Overview of Kjell Scharning's collection of bird stamps. Search by country, species, or region.

Extensive stamp resource site with news & newsletter, reference articles, club links, calendar of meets, and a marketplace.