A gentlemen obtained these signatures through the mail when he was young. The cards are all addressed to him and postmarked in 1948. As for the Orban Sanders signature, I note that his nickname is usually referenced without a "k" at the end (George is the owner's first name).
Any thoughts on the Jackie, Campy, JoeD and Sanders are welcome. I believe the owner is ultimately looking to sell the signed cards, as well as some other scans he has sent me.
Thanks,
Max
