[TUHS] unix v4 tape found

[Matt Day via TUHS]

In 2004, dmr said this about V4 "sno":
> I think writing it was just a quick entertainment for Ken.
-- https://www.tuhs.org/pipermail/tuhs/2004-June/004210.html

On Mon, Dec 22, 2025 at 7:54 AM Diomidis Spinellis via TUHS <tuhs at tuhs.org>
wrote:

> The finding and successful extraction of the tape is an amazing
> development!  I updated the Unix History Repository on GitHub [1] to
> incorporate the tape's contents [2].  As with other snapshots, the
> commit timestamps are derived from the file timestamps while the commit
> authors are derived from a manually-created map file [3].  I updated the
> author map file based on information I had gathered for preceding and
> following Unix Research editions.  I explicitly put "ken,dmr" in all
> source code files where I lacked author information (this is also the
> default introduced via a .* regular expression) to mark missing details.
>   If you can fill any gaps or submit corrections (via a list reply,
> private email, or GitHub PR), I'll incorporate your input in the next
> repo update.  In particular I think it would important to credit the
> authors of the following.
>
>
> /usr/sno: SNOBOL III
> /usr/source/s3/fp*.s: Floating point simulator
> /usr/source/s3/qsort.s
> /usr/source/s4/{cos,gamma,hypot,sin}.s: Math library
>
>
> [1] https://github.com/dspinellis/unix-history-repo
> [2]
>
> https://github.com/dspinellis/unix-history-repo/tree/Research-V4-Snapshot-Development
> [3]
>
> https://github.com/dspinellis/unix-history-make/blob/master/src/author-path/Research-V4
>
>
> Diomidis - https://www.spinellis.gr
>
> On 20-Dec-25 03:53, Angelo Papenhoff via TUHS wrote:
> > I extracted it: http://squoze.net/UNIX/v4/
> >
> > aap
>
> [...]
>
> >>>  From mastodon:
> >>>
> >>> <https://discuss.systems/@ricci>
> >>> Rob Ricci
> >>> ricci at discuss.systems <https://discuss.systems/@ricci>
> >>>
> >>> While cleaning a storage room, our staff found this tape containing
> #UNIX
> >>> <https://discuss.systems/tags/UNIX> v4 from Bell Labs, circa 1973
> >>>
> >>> Apparently no other complete copies are known to exist:
> >>> gunkies.org/wiki/UNIX_Fourth_E
> >>> <https://gunkies.org/wiki/UNIX_Fourth_Edition>
> >>>
> >>> We have arranged to deliver it to the Computer History Museum
> >>>
>
>