- Freedom Cardboard - Hobby discussion covering Baseball, Hockey, Football, Basketball, and more.
- Net54Baseball - Pre and Post-WWII baseball cards and memorabilia.
If you would like to have your site listed here, or under 'Other Collectors,' free to contact me.
- Baseball Reference - Stats, stats, and more stats.
- Old Cardboard - A wealth of information on vintage card sets issued from the 19th century through the 1960's.
- T206 Resource - Everything you need to know about the 1909-11 T206 set.