Gameworn.net - Resource for collectors of game worn hockey jerseys. Includes information, news, articles and discussion forums. Address: N/A | Tel: N/A
Professional Sports Authentication - Service for authenticating sports memorabilia. Also offers news, collector event listings and discussion forums as well as hosting the PSA collectors club. Address: N/A | Tel: N/A
Vintage Tennis Balls - Comprehensive resource for collectors of tennis balls and tennis ball cans. Offers a searchable database of photos and information as well as reference material. Address: N/A | Tel: N/A
Washington State Sports Collectors Association - Organization devoted to sports memorabilia collecting located in Seattle, Washington. Offers event schedules and links. Address: N/A | Tel: N/A