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)