By A Mystery Man Writer
Why is the Honus Wagner card so valuable, and what can it tell us about the history of commerce, marketing, and consumerism?
List of most expensive sports cards - Wikipedia
The Ultimate Beginners Guide to Collecting Baseballs Cards — Breaking Bangers
Facing Pain The Metropolitan Museum of Art
The “Holy Grail” of baseball cards is coming to History Colorado Center – The Denver Post
Baseball cards sales, collecting pulling in serious investors, Baseball
Mickey Mantle baseball card sells at auction for record-setting $12.6 million
Flaten: Why I've lost my passion for sports card collecting
Ranking the 11 worst sets of the Junk Wax Era of baseball cards
Going to bat for history
The Most Valuable Baseball Cards in the World - American Legends
Calaméo - REA Fall 2015