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)