Finished the east wall today by adding Pop Demmer over the family scrapbooks, which begin with Mom & Pop Demmer in 1918 (separately, oddly enough).
There was no contrast in the portrait photo I used, which meant that the face was too white, but as the second color is the wall color, I can't easily slide into that. But after a few minutes looking away from it, it didn't seem the glare nearly as much, so I'll try leaving it alone a bit.