Barry Halper had amassed the hobby's greatest collection of Baseball memorabilia in the world. Within his collection was Ty Cobb's diary that was eventually sold, along with other items, to the Hall of Fame. Nearly a decade later it has been deemed a fake by the FBI.
"We have found that the 1946 Ty Cobb Diary is an unreliable source, not representative of an authentic Ty Cobb artifact. Our suspicions have been confirmed by the FBI statement that 'the written entries are not consistent with the natural writing style of Tyrus R. Cobb.'Read all about it in an article by Ernie Harwell of the Detroit Free Press.
Hat Tip: Sports Collectors Daily: