https://www.youtube.com/watch?v=iwVu2BWLZqA The Incredible Machine https://www.youtube.com/watch?v=FTlzaDgzPY8 The First Ten Years of Unix https://bsdimp.blogspot.com/2019/10/video-footage-of-first-pdp-7-to-run-unix.html https://www.tuhs.org/ https://www.kryoflux.com/