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).