Article in the local paper (well, what used to be the local paper, now an online shell of itself) about a computer museum in New Kensington, PA, that features 'large scale' mainframe and mini computers.

http://triblive.com/local/valleynews...mputing-relics

The 'crown jewel' is a PDP/11-70

Incidentally, it appears that the owner of this museum may be AK4HZ (names match and the QRZ address matches that of the museum).