Stamps
- 41
- International Society of Worldwide Stamp Collectors
- General interest group manages swap and sales circuits and publishes a regular newsletter for members.
- 42
- Malta Philatelic Society
- Promotes the study of Malta's stamps and postal history, and stamp collecting in general.
- 43
- Peshawar Stamp Society
- Pakistani association organizes national stamp exhibitions and provides information about the stamps of Pakistan, Bangladesh, and related territories on its website.
- 44
- Philatelic Webmasters Organization
- Internet-based group supports the efforts of webmasters operating sites dealing with stamp collecting, and provides a list of active members.
- 45
- Stamp Collectors Against Dodgy Sellers
- International group works to reduce sales of fraudulent or misdescribed stamps and to inform inexperienced collectors about what to avoid.
- 46
- Stamps Club
- Maintained by the World Internet Exchange Club, this site enables collectors to contact others to trade stamps, covers, coins, banknotes, and postcards.
- 47
- The Royal Philatelic Society of Canada
- National society publishes a bimonthly magazine, manages sales circuits, and supports the efforts of local clubs across Canada.
- 49
- eBay User's Stamp Club
- Group's membership is comprised of registered eBay users who are interested in stamp collecting.
- 50
- Collecting Illustrated Mail
- Resources and information for collectors of illustrated philatelic covers.
- 53
- Postal History of Sudetenland 1938-1945
- Features various aspects of postal services of Sudetenland during 1938-1945.
- 55
- Rufus Easton first postmaster of St. Louis
- Rufus Easton was a famous postmaster of Saint Louis and judge of the Louisiana Territory appointed by Thomas Jefferson.
- 56
- Worcester Massachusetts Postal History
- Site offers an overview of the postal history of Worcester, Massachusetts, ranging from letters mailed before the introduction of stamps to fancy cancels and postcards.