You wouldn’t think this photo has enough information on it to identify when it was taken, even though there’s a very famous player — Hall of Famer Stan Musial — standing on first base at Wrigley Field.
There actually is enough info, you just have to know where to look for it and how to put things together.
See the first-base coach? That’s Joe Schultz, who was a Cardinals coach from 1963-68, after which he became the manager of the expansion Seattle Pilots, to become famously mocked by Jim Bouton in “Ball Four” (which, if you have never read it, you ought to, it’s one of the most important baseball books of the last 50 years).