American Philatelic Society (APS)
American Revenue Association (ARA)
American Topical Society (ATA)
Brookman Accessories
Grandma's Attic
Northwest Philatelic Library (NPL)
Pacific Northwest Postal History Society (PNWPHS)
Salem Stamp Society (SSS)
Stamp Buddies
State Revenue Society (SRS)
Oregon Stamp Society
First Stamps (Youth)