These Logic Diagrams came from the Institute of Computer Science in London from a researcher & lecturer who was there throughout the late 60s and early 70s.
This was the location of the London computer service ATLAS 1 computer and Alan Fairbourne was the resident operating system expert.
He gave a variety of courses on the Atlas Supervisor and as part of these handed out these diagrams.
They have been left as separate sheets since sticking them together with tape tends to mark the paper.
