[bobbvc]

I found an example of Abbaticchio's signature that I've had for awhile. It's a 1956 GPC. After comparing the sigs in person, I would agree, that is who wrote on the back of the photo. (gotta love the internet, thanks to all who had input!).
I am convinced that Cap=Fred Clarke after looking at some old Pirates team photos I have. Guess I'll be doing some photo scanning this weekend (between managing 4 Baseball games).Thanks Again- Next will be a Barney Dreyfuss signed 1923 season pass.