File:Chicago Cubs logo 1907.png - Wikipedia
Cubs–White Sox rivalry - Wikipedia
Chicago Cubs - Wikipedia
Donald Young (baseball) - Wikipedia
List of Chicago Cubs Opening Day starting pitchers - Wikipedia
Bob O'Farrell - Wikipedia
The Mess of the NL Central, Mervis Day, Amaya, Rules, Game Length
Rick Monday - Wikipedia
Jorge Soler - Wikipedia
File:New-what about the Chicago Cubs?.png - Wikimedia Commons
Cubs Win Flag - Wikipedia
File:Curse of the Cubs.png - Wikipedia
File:Jimmy Sheckard, Chicago Cubs, baseball card portrait
P. J. Higgins - Wikipedia
Del Howard - Wikipedia