Canal Zone Study Group

The Canal Zone Study Group (CZSG), with members worldwide, promotes the collecting and study of all aspects of Canal Zone philately and of materials relating to the Canal Zone. It fosters friendship among collectors, disseminates knowledge of Canal Zone philately and aids members in acquiring and/or disposing of philatelic materials.

The Canal Zone Study Group is registered as a 501(c)(3) organization and donations may be tax-deductible from US taxes.



Celebrate the APS 140th Anniversary and Save on Membership!

Join the American Philatelic Society today and unlock access to exclusive member benefits, trusted expert resources, educational opportunities, and a community of fellow collectors who share your passion for philately.

As part of the APS 140th Anniversary Membership Drive, Canal Zone Study Group members can receive 25% off their first year of a new APS membership by following these simple steps:
  1. Visit info.stamps.org/aps140 to learn more about the benefits of APS membership and click "Join Today".
  2. Complete the online membership application. Be sure to enter our Affiliate APS Number, UN0042, as your referral source near the bottom of the Basic Info portion of the online application.
  3. Select your membership type: Membership: $45/year ($33.75 after discount) Digital Membership: $35/year ($26.25 after discount)
  4. Enter the promotional code: APS140 in the field below your membership selection and continue to check out.

By using our affiliate number, the CZSG will be credited to our organization's recruitment efforts. Affiliates participating in the campaign will be recognized in the April 2027 issue of The American Philatelist based on the number of new members they help recruit.

Together, we can grow the APS community, strengthen philatelic organizations, attract new collectors, and build momentum for the future of philately.