Well, first, shame on me for not trying the search engine here first. That said, these came up easy in a Google image search. Just trying the search engine here quickly shows the (same) Gauteau was previously posted
here by tnfoto (plus this
colorized Brave image posted by sal) and a colorized Engle was posted
here by Ctrane. Also, there are a couple of minor league Art Stokes...
es...posted
here by Dto7 (that Portland image is the best I've ever seen of him, for sure). You can search for the others.
As for Google, this Gautreau is on Pinterest, Engle and Willis are from Find A Grave, and Keesey is from Wikipedia (albeit in a Portland uni). Please note that your post did not specify image size or that the player MUST be in a 1925 A's uni for your purposes. Sometimes, you gotta work with what you got. Oh, and OOTP poster John of Baseball-Birthdays offers colorized prints of
Elbert Andrews. Not hawking his wares, per se, but it's there for you to be had.