Ball signed by the US players that took part in Helsinki 1952 Olympic Games: Harry Bisbey, Ace Burns, Bob Hughes, Ed Jaworski, Jim Norris, Bill Lake, Jack Spargo, Bob Kohler, Bill Kooistra, Bill Dorblaser, Pete Stange.Source: Preserving Sports Heritage. Art and Artifacts from the Collection of the Amateur Athletic Foundation of Los Angeles - edited by Karen R. Goddy