Wrigley Field renovations: A closer look
Then and Now: How Wrigleyville is Changing
A visual history of Wrigley Field -- Chicago Tribune
An evolution to 'Beautiful Wrigley Field' – Sun Sentinel
Rocket ships, eagles and wedding cakes: the Chicago contest that
Evolving wrigley -- Chicago Tribune
An evolution to 'Beautiful Wrigley Field' – Sun Sentinel
The changing face of Wrigley Field's center-field scoreboard
St. Patrick's Day: Why they began dyeing the Chicago River green : NPR
Evolving wrigley -- Chicago Tribune