During research for the mystery mainframe I found some more interesting high-res photos and links. First again from the site of the color IBM 1800 photo, several other interesting stuff,
a Daresbury developed workstation CAMAC working with a PDP11. Several were installed in universities for remote job entry. Also some parts like cards shown
And this lady at a Vanguard Logic Series 1. Looking like if she was playing a video game. Is that the projector or plotter on the left?
An ad of a small aerospace computer inside a large computer room, Northrop Northronics NDC-1000
and a photo gallery with mainframes and minis including some rare industrial and military computers like ROLM, but also IBM photos including 1800 and Raytheon including inside views, here an Computer Automation ALPHA/LSI