History – SABR's Baseball Cards Research Committee
Legal/Contracts – SABR's Baseball Cards Research Committee
Donruss and Panini – Page 2 – SABR's Baseball Cards Research Committee
Peter Dreier, Robert Elias - Baseball Rebels - The Players, People, and Social Movements That Shook Up The Game and Changed America-University of Nebraska Press (2022), PDF, American Civil War
Court dismisses lawsuit filed by widow of ex-pitcher Fidrych –
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Topps – Page 4 – SABR's Baseball Cards Research Committee
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1956–1980 – Page 4 – SABR's Baseball Cards Research Committee
History – SABR's Baseball Cards Research Committee
Mark Fidrych, Baseball's Beloved 'Bird,' Dies at 54 - The New York Times
Mark The Bird Fidrych's Widow Files Wrongful Death Suit Against Mack Trucks