CardCorner: 1968 Topps Johnny Callison
Card Corner Plus: 1966 Topps: Buc Belters
Johnny Callison (1939-2006) - Find a Grave Memorial
CardCorner: 1968 Topps Johnny Callison
Chuck Tanner – South Side Hit Pen
What is the biggest hypocrisy about the MLB baseball Hall of Fame? - Quora
CardCorner: 1968 Topps Johnny Callison
Cooperstown Confidential: Thinking of Johnny Callison
Books and Blogs – SABR's Baseball Cards Research Committee
Johnny Callison Baseball Stats by Baseball Almanac
Roberto Clemente - Wikiquote
TMN's Heros, Icons & Legends Auction by thememorabilianetwork - Issuu
Philadelphia Phillies Throneberry Fields Forever
What is the biggest hypocrisy about the MLB baseball Hall of Fame? - Quora
CardCorner: 1968 Topps Johnny Callison