Tom Ricketts used Red Sox's model for the Cubs
Chicago Cubs - Wikipedia
Wrigley Field Rooftops Fan Seats
Chicago Cubs are back in the postseason, perhaps thanks to new ownership under the Ricketts family
Ricketts buys three more Wrigley rooftops, unveils new ticket site
Crain's Roundup: Ricketts Buying Rooftops, Walgreens Outsourcing Wellness, Chicago News
Cubs' Wrigleyville revenue streams take priority over Wrigley Field talent - Chicago Sun-Times
Wrigley Field: The Centennial: 100 Years at the Friendly Confines: Krantz, Les: 9781600788345: : Books
Wrigley Field Ricketts Rooftop - 1937 Chicago Cubs
Ricketts Family Moving Forward With Wrigley Master Plan - Curbed Chicago
Cubs owner buys 3 Wrigley rooftops
What's the Nightly Rate at Hotel Zachary Wrigleyville Chicago?
Ricketts family now owns 9 rooftops, launches new website for tickets - ESPN - Chicago Cubs Blog- ESPN
Wrigley Field: A Century of Survival – Society for American Baseball Research