I don't actually own the autograph--in fact, it doesn't even exist anymore! It's a microfiche copy of his WWI draft registration. The original burned in an Atlanta fire about 50 years ago, along with those of every other American who completed the WWI registration.
When you see an address on personal correspondence from a player this far back, there's usually a tie-in that you can find which connects the dots to what would seem an unrelated geographic location. Most of the time, they had spent time playing in that town, or the letter is addressed to a teammate from that town. Of course, this isn't always the case, but I find it happens more often than not. Can't find any record of the recipient being a player at any professional level.
Good luck with your research, and please keep us apprised!
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