There’s a lot of work preserving the work that had been done to preserve some of the important computing developments of the past. My own past has these:
Many posts here, in combination with the technical details outlined in the CODEX, will attempt to capture a portion of the conservation efforts and general operations of these systems which are now available to run on your own.
Most of these systems can be explored through Kevin Jordan’s site “Nostalgic Computing Center“!
Other posts on the CDC Community Wiki will show you how to install your own instance of VM/CMS, IBM-1130, OS/MVS 3.8, VAX/VMS, CDC NOS 2/871, CDC/PLATO(CYBIS), and more.