I found three versions of one of the images under three different call numbers at the Carnegie Branch. I believe they are different prints from the same glass negative as the cropping is slightly different in each one. The last one with a "T" in the lower left corner is the location of the school house so I'm certain this is definitely a copy that came in as part of another collection of photographs.
When blown up, I think this is probably the best version of the three.
I'm please with the progress of the search so far.