Uploaded January 2026 | Updated September 2026, 1 day ago

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Sources:
theregister.com/2025/12/23/unix_v4_tape_successfully_recovered
hackaday.com/2025/12/29/only-known-copy-of-unix-v4-recovered-from-tape
kutv.com/news/arc-salt-lake/rare-computer-software-language-found-hidden-in-university-of-utah-closet
wikipedia.org/wiki/History_of_Unix
archive.org/details/unix_v4
https://unixv4.dev/
youtube.com/watch?v=m-3RJaKcw_4&t
youtube.com/watch?v=dFUlAQZB9Ng


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