National Baseball Hall of Fame - Dressed to the Nines - Uniform Database
Bob O'Farrell - Wikipedia
Wrigley Field (Chicago) – Society for American Baseball Research
Vintage baseball game old photo hi-res stock photography and images - Alamy
Mr. Wrigley's Ball Club': A Wild Decade With The Chicago Cubs
Chicago Cubs team ownership history, 1876-1919 – Society for American Baseball Research
2013 Oldtime Baseball Game Program
Babe Ruth, an influenza outbreak and a forgotten baseball writer - The Athletic
11,699 Chicago Cubs World Series Photos & High Res Pictures - Getty Images
Lot Detail - 1918 World Series Game Used Ball – Game 6, Red Sox over Cubs, 4-2 – Heavily Inscribed by Babe Ruth, and Signed by Sox Manager Ed Barrow, Team Owner
Baseball and the Babe couldn't escape Spanish Flu pandemic
Cubs pitcher Hippo Vaughn, Comiskey Park, 1918 Chicago cubs history, Chicago cubs baseball, American athletes