Release Date: June 1979
Released By: Bell Labs, Holmdel, New Jersey
Source Code: A portion of the PDP-11 code is browsable in the System III source tree
Documentation: included in the source code

From Wikipedia

UNIX/32V is a discontinued version of the Unix operating system released by Bell Labs. It is largely a port of the 7th Edition Unix to Digital Equipment Corporation's VAX 11/780, a 32 bit computer. Tom London and John Reiser did most of the work. Although UNIX/32V did allow larger programs, it was still swap based and did not implement virtual memory. London and Reiser convinced their management to allow them to send a copy to the University of California at Berkeley, where it became the basis for 32 bit versions of BSD.