GolfCollector.com
Message board to discuss collecting golf scorecards.
golfcollector.com Details

TennisCans.com
Vintage tennis ball can and container database. Includes message board, photos, manufacturers, guide to cleaning cans, age, history, and type.
www.tenniscans.com Details

The Olympic Collectors Commission
Features stamps, coins and memorabilia items in a virtual gallery, including items from 1896 Athens and forward to Sydney 2000. Also offers event list and related links.
www.collectors.olympic.org Details

Washington State Sports Collectors Association
Sponsors an annual show in Seattle. Includes club meeting times, show information and dates, dealer profiles, and membership information.
www.wssca.net Details