July 16, 1921: Cristóbal Torriente, Chicago American Giants knock the starch out of 'Iron Man' McGinnity – Society for American Baseball Research
Chicago Cubs Team History
1936 Chicago Cubs season - Wikipedia
Chicago Cubs team ownership history, 1876-1919 – Society for American Baseball Research
History of the Chicago Cubs - Wikipedia
Chicago Cubs team ownership history, 1876-1919 – Society for American Baseball Research
History of the Chicago Cubs - Wikipedia
SABR Convention History – Society for American Baseball Research
The Golden Age of Chicago Baseball in an Era of Social Turmoil, 1901-1919 – Brewminate: A Bold Blend of News and Ideas
Chicago Cubs' Owners History
Chicago Cubs: Best, worst moments all-time - Sports Illustrated