The business of baseball: Chicago Cubs - Beyond the Box Score
The Cubs: The Complete Story of Chicago Cubs Baseball - Glenn Stout
Chicago Cubs - Wikipedia
The time has come for the Ricketts' to sell the Cubs - Beyond the Box Score
Ricketts living the Cubs dream now
Cubs owner Tom Ricketts continues to cry poor - NBC Sports
PHOTOS: Chicago Cubs through the years, a look back at the history of the team – The Denver Post
Wrigley Field, home of the Chicago Cubs, is officially designated as a National Historic Landmark
Chicago Cubs - Wikipedia
Ricketts Family Knows Cubs Fans Haven't Got All Century - The New York Times
Chicago Cubs team history and facts
Thomas S. Ricketts - Wikipedia
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History of the Chicago Cubs - Wikipedia