A friend found this doc which as far as I can tell is not online anywhere yet. Preliminary sketch for the UNIX/370 effort at Bell based on TSS/370.  Apparently started at Holmdel, I had always thought Indian Hill.

https://drive.google.com/file/d/1zrnKJ7fT1yrt_9r8QJHtZm7cI9EQEw76/view?usp=sharing

Please archive!