Stamps
- 361
- Stamps on Stamps Collectors Club
- By promoting communication between members and publishing a newsletter three times per year, organizations supports collectors of stamps picturing stamps.
- 362
- Wine on Stamps Study Unit
- Group specializes in thematic stamps related to wine, wine production, and grapes, and publishes a quarterly journal with articles about such stamps.
- 363
- Pitcairn Islands Study Group
- Promotes the collection of Pitcairn Islands stamps and postal history and the study of islands' history and geography.
- 364
- Society of Australasian Specialists/Oceania
- Community of collectors shares interest in stamps from Australia, New Zealand, and the Pacific islands.
- 367
- Stamp Arena
- Stamp collecting information, forum, fairs and help. Created by Australian stamp collectors.
- 369
- American Society for Philatelic Pages and Panels
- Group dedicates its efforts to the study of United States commemorative cancellation pages, souvenir pages, commemorative panels, stamp posters, and stamp announcements.
- 370
- Bermuda Collectors Society
- Club supports the efforts of collectors who are interested in Bermudan stamps, postcards, and postal history through a quarterly journal and reference materials.
- 371
- British North America Philatelic Society
- Organization supports collectors of the stamps, covers, and postal markings of Canada and the former colonies that comprise the country.
- 372
- Carriers and Locals Society
- Group promotes the study of the operations and postal history of private mail companies that operated in the United States in the 1800s.
- 373
- Colorado Postal History Society
- Collectors in group work to preserve postal history tied to Colorado.
- 374
- Confederate Stamp Alliance
- Association for collectors of Confederate States stamps and postal history offers a quarterly journal and expertizing services.
- 375
- Dakota Postal History Society
- Club promotes the study of the postal history of North Dakota, South Dakota, and Dakota Territory.
- 376
- Florida Postal History Society
- Group of collectors interested in philatelic material from the Sunshine State publishes a journal three times a year and holds annual meetings.
- 377
- New Jersey Postal History Society
- Supports collectors of New Jersey postal history with a quarterly newsletter and reference books.
- 378
- Ohio Postal History Society
- Club members are dedicated to the study of postal history from Ohio, including philatelic material and information about post offices, postal routes, and markings used on mail.