Lost Unix v4 source code from 1973 recovered from decades-old magnetic tape

Archivist Al Kossow of Bitsavers, who led the technical recovery, described the process as "easy" as such efforts go. The tape, he explained, had "a pretty ...
Fudzilla

Unix v4 clawed back from a 1970s tape

Computer History Museum software curator Al Kossow has pulled the contents from a more than half-century-old tape found at ...

UNIX V4 tape successfully recovered: First ever version of UNIX written in C is running again

UNIX V4, the first ever version of the UNIX operating system in which the kernel was written in the then-new C programming ...
How-To Geek on MSN

52 years later, UNIX V4 has been rediscovered and digitized

Linux, macOS, FreeBSD, Android, and other operating systems can trace their lineage back to the early commercial versions of Unix. One of the missing links in that chain, UNIX Fourth Edition, is now ...