I have this dream of a github repo that contains all the historical code along with instructions how to run emulators of the old hardware.

I know there is a hardware accurate PDP-11 emulator, probably someone did a PDP-7 also - I haven’t looked. I’m not sure if all the original source code is publicly available, it ideally should be, hopefully nothing has been lost.

Such a project would be like a digital historian. Preserving for future generations all technical details.