The game's hidden treasures are revealed in "Inside the Baseball Hall of Fame"

The Baseball Hall of Fame has more than 40,000 artifacts, 3 million documents and 500,000 images, but only 12 to 15 percent can be displayed at any one time. Among the many that never are put out on public display are some fascinating (and odd) pieces of history that tell some interesting stories. A review of "Inside the Baseball Hall of Fame" for U-T San Diego's Books section: http://www.utsandiego.com/news/2013/Jun/09/tp-hall-of-fames-hidden-treasures/