WBEZ brings you fact-based news and information. Sign up for our newsletters to stay up to date on the stories that matter.Wrigley Field turned 100 last year, and next year marks the 100th year of the Cubs as it’s tenant. But the Cubs have been around a lot longer than the stadium. The team existed for decades before they relocated to the North Side, decades before they were even called the Cubs! There’s a new book brimming with stories from the earliest days of the sport in The Windy City. It’s called Before The Ivy: The Cubs’ Golden Age in Pre-Wrigley Chicago. Author Laurent Pernot sat down with Morning Shift’s Jason Marck to talk about some of the history.