How many items do you wind up with when you're a baseball collector your entire life?
Bruce Hellerstein has graduated from baseball cards to ballpark memorabilia and beyond. His mammoth collection was outgrowing his basement in the Denver suburbs, but he doesn't have to worry about that anymore.
Hellerstein has opened B's Ballpark Museum near Coors Field, with display after display of cool items from a collection ranked among the best in the world.
He's even got a book in the works according to Lynn DeBruin, who got a tour and wrote about it for ESPN's Page 2.