I checked archive.org but didn't find any. I assume there are collections of IBM 370 software but don't know where to look.

I did come across https://books.google.com/books?id=Gf4YAQAAIAAJ&pg=PA89&dq=%2... from 1978 ("Software Designers Workbench", Paul A. Scheffer, Martin Marietta Aerospace

> One of the more innovative of recent software engineering activities is the concept of a Programmer's Workbench (PWB)

(PWB is the term for the product which included SCCS.)

> A simple generalization of the PWB concept results in the idea of a total software engineering facility, i.e., a Designer's Workbench (DWV) ...

> Using a PDP 11/70 architecture base, and system software which includes RSX-11M and the UNIX operating systems, standard PWB tools, and INGRES data base capabilities ...

Since it looks like UNIX supported the RSX-11M in 1978, why couldn't Ericsson be using Unix on an RSX-11M at the same time in Norway?

I asked Marc Rochkind, he doesn't have a copy of the OS/360 SCCS version any more. He said maybe it survives buried deep in some Bell Labs corporate archive, and made reference to the scene at the end of Raiders of the Lost Ark