From my understanding, this group of photos belonged to Amos Strunk personal scrapbook. Taken in 1919 during Red Sox spring training. This group and others from this set (not seen) later sold at varies AHs over the years. I personally own the Hooper and Pennock photo in this group.
It is possible potentially that these photos had extras and were given out to teammates. On the other hand, they could be fake. With the pics provided and not having it in hand...makes it a little hard to tell.
Here's the Wally Schang
https://rmyauctions.com/bids/bidplace?itemid=20022
And article about the find...
https://www.sportscollectorsdaily.com/70096-2/