Stamps
- 363
- Stamp Arena
- Stamp collecting information, forum, fairs and help. Created by Australian stamp collectors.
- 365
- 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.
- 366
- 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.
- 367
- 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.
- 368
- 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.
- 369
- Colorado Postal History Society
- Collectors in group work to preserve postal history tied to Colorado.
- 370
- Confederate Stamp Alliance
- Association for collectors of Confederate States stamps and postal history offers a quarterly journal and expertizing services.
- 371
- Dakota Postal History Society
- Club promotes the study of the postal history of North Dakota, South Dakota, and Dakota Territory.
- 372
- 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.
- 373
- New Jersey Postal History Society
- Supports collectors of New Jersey postal history with a quarterly newsletter and reference books.
- 374
- 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.
- 375
- Pacific Northwest Postal History Society
- Members of group specialize in the postal history of Idaho, Montana, Oregon, and Washington.
- 376
- Peninsular State Philatelic Society
- Group promotes the study and collection of postal history from Michigan, publishing a quarterly newsletter with articles about that topic.
- 377
- Postal History Society of Canada
- Organization devoted to the study of the postal history of Canada and its predecessor colonies offers articles and exhibits on its website, and provides online databases for members.
- 378
- State Revenue Society
- Members of organization specialize in collecting United States fiscal stamps issued by state and local governments.