The History of CP/M (1980) https://www.retrotechnology.com/dri/CPM_history_kildall.txt
@estherschindler Gary Kildall, an underappreciated pioneer who died ignominiously IIRC 😕 I used CP/M on old TRS-80s but I was a kid and didn't really appreciate it.
@estherschindler Plus one million points for linking to a plaintext file.