As Barry Bonds nears his record 756th home run, he's stockpiling quite a collection of souvenirs — bats, balls, helmets and spikes, pieces of baseball history perfectly suited for the Hall of Fame. Whether he'll donate any of them to Cooperstown, however, is in doubt. "I'm not worried about the Hall," the San Francisco slugger said during a recent homer drought. "I take care of me." Bonds is careful with personal items related to his home run pursuit. He makes certain that hats, jerseys and other things he wears are authenticated, and he keeps them in a warehouse. He marks...