Hi, folks. Tom Lyon here - this UNIX 370 stuff was recovered by Stephen at LCM+L from DECtapes that I've had sitting around for 40+ years.
If anyone wants to get serious with the code, you'll need Hercules with a VM/370 image as well as a PDP-11 emulator running V6. There's not a lot beyond the kernel, I got the shell working enough to prove that fork worked, and then ran out of steam because of the awful communication problems between the PDP and the IBM. [ But that was my start as a networking guy ]. I personally haven't had time to do anything with the recovered bits.