George Halas (1895 - 1983) - Genealogy
Other Historical Memorabilia, Historical Memorabilia, Collectables - PicClick AU
Who are the only players in history that played both NFL football and Major League baseball? - Quora
George Stanley “Mugs” Halas Jr. (1925-1979) - Find a Grave Memorial
Grave Story: George Halas (1895-1983) – RIP Baseball
RIP Baseball - Here lies Gerald Shea, an amateur St. Louis catcher who played two games with the St. Louis Cardinals at the end of the 1905 season. His obituary notes that
Where 50 Chicago sports greats are buried
George Halas Cards Trading Card Database
Who are the only players in history that played both NFL football and Major League baseball? - Quora
George Halas Cards Trading Card Database