Mustaches and Mayhem: Charlie O's Three-Time Champions: The Oakland Athletics: 1972-74 (Sabr Digital Library)
Greene, Chip／Greene, Chip／Erion, Greg／Levin, Len／Nowlin, Bill／Wolf, Gregory H.／Wancho, Joe／Armour, Mark／Costello, Rory／Hulbert, Joanne
The Year of Blue Snow: The 1964 Philadelphia Phillies (SABR Digital Library)
Marmer, Mel／Marmer, Mel／Nowlin, Bill／Comly, Clem／Forr, James／Lake, Russ／Levin, Len／Costello, Rory／Wolf, Gregory H／Armour, Mark
