My Phillies Heaven - Philadelphia Phillies history shown through baseball cards.
Caramel-Cards.com - Early candy and gum baseball cards.
David Justice Rare and Unusual Sports Cards - A collection of rare and unique cards of David Justice
Matt Williams Rare and Unusual Sports Cards - A collection of rare and unique cards of Matt Williams
Vintage Cardboard - Specializing in buying and selling pre WWII Baseball cards and collectibles. PCL items, Tobacco cards, and scorecards. Reference areas, newsletter, and auctions.
Sports Art by Dick Perez - A showcase of his works for the Hall of Fame, Perez-Steele and Philadelphia Phillies.
Kens Kards - Nolan Ryan memorabilia site. Features trade and want list.
1952 Topps Baseball Cards - History of the 1952 topps Baseball Card set. Complete checklist and images of all players comprising the entire set. Also, 1952 Topps style cards of Ted Williams, Stan Musial and Joe DiMaggio.
Old Cardboard - Vintage baseball cards.
SportSearcher.com - Online sports and baseball collectible directory
Orioles Trading Post - Orioles fan trades and sells cards. Shares fifteen minutes of fame, and includes links.