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Convening Societies PIPEX 2023

American Helvetia Philatelic Society (AHPS)   American Helvetia Philatelic Society (AHPS) The American Helvetia Philatelic Society (AHPS) is the largest group of collectors of Swiss stamps outside Switzerland. The current organization dates from 1975 but traces its lineage to 1938, when six Swiss and three Americans founded the original Society for Collectors of Switzerland in Philadelphia.
American Helvetia Philatelic Society (AHPS) American Air Mail Society (AAMS)

The American Air Mail Society (AAMS) was founded in 1923, and is the second oldest aerophilatelic society in the world, with over 1,100 members worldwide. The AAMS publishes the monthly magazine The Airpost Journal, as well as the American Air Mail Catalogue, and many other aerophilatelic books. The AAMS holds an annual convention during major philatelic exhibitions in different parts of the country.

Additional information and an application form can be obtained on the AAMS website at:

Pacific Northwest Postal History Society (PWNPHS) Pacific Northwest Postal History Society (PWNPHS) The Pacific Northwest Postal History Society (PWNPHS) is dedicated to the study of all facets of postal history of the four states that comprised the Oregon Territory – Oregon, Washington, Idaho and Montana. To accomplish this lofty goal, we publish a quarterly journal, conduct specialized studies, present an annual auction and provide a comfortable forum for postal historians to freely exchange ideas and information.

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