To Bob: 3 More Senior Photos: ? J. P. McCaskey H.S.

I think these are the last three senior class photos from this particular set of photos. They are each addressed to Bob, and all signatures include the number 54, which I'm guessing is the class of 1954. From some searching I've done regarding all these photos I think the high school might be J. P. McCaskey H.S. in Lancaster, PA.