Given the team and dates on the marquee in this photo, it wasn’t too difficult to find.
The Cubs played the Milwaukee Braves in a five-game series at Wrigley Field April 29 and 30, May 1, 2 and 3, 1958.
Wait, what? A scheduled series of five single games? Why did they do that? We don’t see things like that in modern baseball and I don’t recall any series like this in my time going to Wrigley Field.
While I don’t have a definitive answer to this question, I have an educated guess.