Matthew J. Prigge – SABR's Baseball Cards Research Committee
1980 Topps Baseball: June 2016
Brewers' players Jim Gantner and Tim Johnson
Matthew J. Prigge – SABR's Baseball Cards Research Committee
MSee2alta (u/MSee2alta) - Reddit
My Player Collections – Jim Gantner – SABR's Baseball Cards Research Committee
Jim Gantner - Wikipedia
1980 Topps Baseball: June 2016
How come Billy Beane never won anything but was able to change baseball? - Quora
1980 Topps Baseball: June 2016