American Philatelic Society (APS)
American Topical Society (ATA)
Brookman Accessories
Grandma's Attic
Germany Philatelic Society of the USA (GPSA)
International Society of Guatemala Collectors (ISGC)
Mexico-Elmhurst Philatelic Society, International (MEPSI)
Northwest Philatelic Library (NPL)
Pacific Northwest Postal History Society (PNWPHS)
Salem Stamp Society (SSS)
Stamp Buddies
Oregon Stamp Society
First Stamps (Youth)