[TUHS] unix v4 tape found

[Diomidis Spinellis via TUHS]

Thank you!  I also got a separate authoritative confirmation: 
"definitely ken -- noone else ever touched it".   I just pushed the 
updated the map file:

https://github.com/dspinellis/unix-history-make/blob/master/src/author-path/Research-V4#L150

The corresponding history repo commits should appear in the next 24 hours.


On 22-Dec-25 22:58, Matt Day wrote:
> 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 <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 <mailto: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 <https://
>     github.com/dspinellis/unix-history-repo>
>     [2]
>     https://github.com/dspinellis/unix-history-repo/tree/Research-V4-
>     Snapshot-Development <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 <https://github.com/dspinellis/unix-history-
>     make/blob/master/src/author-path/Research-V4>
> 
> 
>     Diomidis - https://www.spinellis.gr <https://www.spinellis.gr>
> 
>     On 20-Dec-25 03:53, Angelo Papenhoff via TUHS wrote:
>      > I extracted it: http://squoze.net/UNIX/v4/ <http://squoze.net/
>     UNIX/v4/>
>      >
>      > aap
> 
>     [...]
> 
>      >>>  From mastodon:
>      >>>
>      >>> <https://discuss.systems/@ricci <https://discuss.systems/@ricci>>
>      >>> Rob Ricci
>      >>> ricci at discuss.systems <https://discuss.systems/@ricci <https://
>     discuss.systems/@ricci>>
>      >>>
>      >>> While cleaning a storage room, our staff found this tape
>     containing #UNIX
>      >>> <https://discuss.systems/tags/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 <http://gunkies.org/wiki/
>     UNIX_Fourth_E>
>      >>> <https://gunkies.org/wiki/UNIX_Fourth_Edition <https://
>     gunkies.org/wiki/UNIX_Fourth_Edition>>
>      >>>
>      >>> We have arranged to deliver it to the Computer History Museum
>      >>>
>