I think I found all of 2 photos I’d not yet seen that included the Guastavino tile, though I was able to create some context based on the backgrounds of images of the LIRR concourse from the 60s.

Comparison shots of the not LIRR part—from when benches existed atop tblock glass tile in the mess of advertisements the station was toward its end. Over a few more photos, you see lockers. Then construction equipment. Then the back wall is suddenly missing. But it’s still clearly Old Penn Station.