As much as I like Boudreau's lifetime Major League Baseball pass, I think this one, issued to him by the American Basketball League for the 1961-62 season, is even cooler.
Boudreau was a standout basketball player at Illinois and even played a little professionally, so it made sense that he'd have this pass. Plus, this was the short-lived ABL's inaugural season, with the Cleveland entry -- the Pipers -- being owned by George Steinbrenner.