Al Yellon created Bleed Cubbie Blue and has been its managing editor since 2005. His latest book about the Cubs is "Chicago Cubs Firsts." Find him on Bluesky at @bleedcubbieblue.bsky.social
The screenshot at the top of this post is from this video that I found recently on YouTube:
As you can see, it’s titled “Cubs Game 1960’s.” Okay, now we can get to sleuthing.
The marquee shows a series against Milwaukee on Aug. 24-25-26. With the marquee being blue/green and the title, this has to be the Milwaukee Braves.
The marquee was painted red in 1965, so this would have to be before that.