AI-Rating
  • Panama Canal Commission
  • www.pancanal.com
  • The Panama Canal, with its unique location at the narrowest point between the Atlantic and Pacific oceans, has had a far- reaching effect on world economic and commercial developments throughout most of this century.
4.3
(si*)
  • Canal Zone Study Group
  • www.canalzonestudygroup.com
  • Worldwide society promotes Canal Zone philately with a quarterly newsletter, handbooks, and an online listing of earliest known uses.
3.5
(si*)
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