I'm talking about Wrigley Field in Chicago, Illinois. Home to the Chicago Cubs baseball team and once home of the Chicago Bears NFL team. Opened in 1914 as the North Side Ball Park. So yes, the minor league park in LA (which was home to the expansion California Angels in 1961) was named Wrigley Field prior to the name change in Chicago.
In addition to those two, William Wrigley also owned a spring training park on Catalina Island that was sometimes called Wrigley Field.
Okay, Wrigley Field in Chicago.
If your book shows a picture of the end zone over the dug-out, then it must be true. It just seems unlikely because there is definitely room for a football field. Were they that stupid that they couldn't lay the field out in a manner that they didn't need to go into the dug-out? Actually, it was larger back then because recently they added a row or two of seats around the infield.
This whole conversation stemmed from a ridiculous premise of having a track meet on an aircraft carrier. I'm sorry I got involved.