The 10 most expensive sports collectibles, Henry Herald Photo Slideshows
1952 Topps Mantle PSA 9 Sells for Record-Setting $2.88 Million
World's Most Expensive Sports Memorabilia
Two pieces of Babe Ruth memorabilia sold by Charlie Sheen each go for over $2 million in auction - ESPN
Babe Ruth jersey sells for record $5.64 million at auction
Babe Ruth jersey sells for record $4.4 million - ESPN
List of most expensive books and manuscripts - Wikipedia
Ruth jersey sells for more than $4.4 million at auction
Why are athletes like NBA players not the richest people when they earn so much more than the 'richest people'? - Quora
I'm Not A Headline Guy Sports ramblings…with a Yankees bias!
Babe Ruth Yankees jersey sells for $5.64 million – a record price – Hartford Courant
Babe Ruth's 1920 jersey goes for whopping $4.4 million – Orange County Register
Babe Ruth's New York Yankees Jersey Smashes Record By Selling for $4.4 Million at Auction - TSM Interactive