I honed in on the socks that Walter is wearing in the picture. On eBay there is a picture of Walter with the same socks labelled as 1924. I subsequently went to this site:
http://www.sportsecyclopedia.com/al/...atsimages.html
which shows a picture of Walter with the same socks and with the label - Walter Johnson
1924 League Award
23-7 2.72 ERA
Definitely not conclusive but perhaps a start. Regards, Tom