Stamps
- 181
- West Essex Philatelic Society
- Club sponsors meetings in Verona, New Jersey, twice monthly, maintains a reference library for members, and provides an online archive of the group's bimonthly newsletter.
- 182
- West Suburban Stamp Club
- With meetings twice a month in Plymouth, Michigan, this club sponsors The Plymouth Show each year and publishes a member newsletter 10 times a year.
- 183
- West Toronto Stamp Club
- Based in Ontario, Canada, this group meets four times a month except during the summer, and publishes a newsletter five times per year.
- 185
- Westfield Stamp Club
- New Jersey group sponsors monthly meetings and an annual stamp show, and archives its members newsletter, which is published five times a year, on its website.
- 186
- Wichita Stamp Club
- Group meets twice monthly, publishes a monthly newsletter, and organizes the annual Wichita Stamp and Coin Show.
- 187
- Wilkinsburg Stamp Club
- Organization holds meetings east of Pittsburgh, Pennsylvania, twice monthly, publishes a bimonthly newsletter, and sponsors the annual WILKPEX show for which it produces Cinderella stamps.
- 188
- Will County Stamp Club
- Twice a month, this group of collectors meets in Joliet, Illinois. The club also archives recent member newsletters on its website.
- 189
- Winnipeg Philatelic Society
- Club based in the capital of Manitoba, Canada, publishes a regular newsletter, holds meetings twice a month, and organizes an annual show.
- 190
- Wisconsin Federation of Stamp Clubs
- Federation caters primarily to local clubs located in Wisconsin, but also offers individual memberships. In addition to publishing a journal 10 times a year, the WFSC makes a variety of exhibits publicly available on its website.
- 191
- Worthington Stamp Club
- In addition to holding meetings twice monthly in the Columbus, Ohio, area, this club sponsors an annual bourse and exhibition.
- 192
- American Air Mail Society
- Promotes aerophilately through publications, member auctions, and an annual meeting.
- 193
- American First Day Cover Society
- Organization supports first day cover collectors, cachet makers, and dealers.
- 194
- American Revenue Association
- Through a quarterly newsletter, handbooks, and catalogs, this organization supports collectors who specialize in revenues and other non-postal stamps.
- 195
- American Society of Polar Philatelists
- Group collects stamps and covers used in Earth's polar regions, and publishes a quarterly magazine containing articles about such material.
- 196
- Armenian Philatelic Association
- Group focuses on Armenian philately and other nations' stamps that are related to Armenia.
- 197
- Art Cover Exchange
- Facilitates trade of covers bearing hand-drawn or printed art and other decorations.
- 198
- Auxiliary Markings Club
- Group studies covers bearing handstamps, machine markings, labels, manuscript notations, and other indications that the covers received special attention in the mails.