1973 Bell Labs Holmdel Computing Center Training Film

HN commenters share it as a rare, atmospheric look at what working at an early computing center was actually like, including how code was submitted and processed.

A 1973 AT&T training film made for new employees at Bell Labs' Holmdel Computing Center, when Unix was in its third version and running at 16 computer centers in the Bell System. It shows how users submitted jobs and used the center's machines.