Interestingly enough found a copy of the photo that was sold in late 2010 by SCP auctions.
http://www.scpauctions.com/LotDetail.aspx?lotid=13964
Looks like it was a snap that was taken of the original. The "G.W. Darby" that's in pencil on the big one I have is visible in the smaller photo (on the arm). The good thing is it had annotations of all player names (on back) and numbers (on front).
Probably 1920's vintage copy sold in the auction but neat because it had all of the firsthand annotations (and signature) on the back. Would be good to get the pair together.
Alan