Bell bottom-era tape unearthed, could contain lost piece of Unix history

A tape-based piece of unique Unix history may have been lying quietly in storage at the University of Utah for 50+ years. The question is whether researchers will be able to take this piece of middle-aged media and rewind it back to the 1970s to get the data off.

The news was posted to Mastodon by Professor Robert Ricci of the University of Utah's Kahlert School of Computing.

The nine-track tape reel bears a handwritten label reading:

UNIX Original From Bell Labs V4 (See Manual for format)

Ricci says that the handwriting on the label is that of his former advisor Jay Lepreau [PDF], who died of multiple myeloma in 2008.

If it's what it says on the label, this is a notable discovery because little of UNIX V4 remains. That's unfortunate as this specific version is especially interesting: it's the first version of UNIX in which the kernel and some of the core utilities were rewritten in the new C programming language. Until now, the only surviving parts known were the source code to a slightly older version of the kernel and a few man pages - plus the Programmer's Manual [PDF], from November 1973.

More was to follow - some hours later, he continued:

So, this is the original copy of UNIX Fourth Edition received from AT&T by the inventor of the Utah Teapot - as seen in the original Windows NT OpenGL screensaver.

Ricci said:

That being the Computer History Museum in Mountain View, California - which Google Maps tells us is a mere 771 miles away, a modest 12 hours' drive. The software librarian at the CHM is the redoubtable Al Kossow of Bitsavers, who commented in the thread that he is on the case. On the TUHS mailing list, he explained how he plans to do it:

He also noted:

The Reg FOSS desk has occasionally corresponded with Kossow, and we feel sure that this precious find could be in no better hands. ®