Here is what I was able to dig up and discover for you. First image is the same image you posted, but bigger and a bit more clear...
The image below, I highlighted a few key areas. First red arrow pointed at the last name on the bottom right, it is pretty clearly written as "W. Crossman (stickboy)". I then noticed on the far left where the 2nd red arrow is, a signature that to me reads "Wally Crossman". This one was a bit more speculative, but comparing it to every other name on the photo, this is what the signature looked like to me.
Which led me to guess, as people and players generally sign team photos like this, they sign next to or right near themselves. This leads me to believe the person directly above the autographed name to be Wally Crossman. I circled the individual I felt like was the one you were looking for.
The final photo below, again, it is clearly stated "Walter Crossman" as one of the two people in the front. The top of the photo description states "Left to Right" so the only option remaining of the two men in the front is that Wally is the man on the left as his name is the first. The other person up front on the right appears to be a child to me, which in the photo above there clearly are no kids. I'd assume this is said mascot.
As far as other photos, you may want to search later into team history, not just 1943. He was apparently part of the team for 61 years as the locker room assistant, so there may be team photos including him all the way up to the 90's and beyond. I hope this was of some assistance and help you out with what you were searching for.