Chicago Cubs, History, Notable Players, & Facts
Curveball for Sox' 1918 win – Boston Herald
1918 Chicago Cubs season - Wikipedia
April 20, 1916: Cubs played their first game at Weeghman Park – Orlando Sentinel
Bob O'Farrell - Wikipedia
2013 Oldtime Baseball Game Program
MLB Top 5: Chicago Cubs Pitchers - LWOSports
September 5, 1918: Babe Ruth tosses shutout in Game 1 as patriotism prevails in World Series opener – Society for American Baseball Research
Oldtime Baseball Game at St. Peter's Field in Cambridge
A Game From Cubs History: May 11, 1921 - Bleed Cubbie Blue