Is on ftp.netbsd.org in ~ftp:/pub/NetBSD/arch/pmax/snapshot
(the contents of the etc.tar.gz tarball are bogus; they're taken
 off one of my machines at Stanford, and I hope to replace it soon.)

This snapshot is built from NetBSD-current as at 22 Dec 1995.
It includes, and is built with, the NetBSD gcc 2.7.2 source,
and a preliminary port of gdb.  (It also includes some modified system
header files needed to build gdb.)

I believe this is the first snapshot of NetBSD/pmax where the
whole sup'able source tree builds cleanly -- at least, as cleanly as
it does for any other NetBSD port.  (groff and libg++ don't compile
with -Werror, which was recently added to the user-land CFLAGS in
-current.)

merry Xmas,
--Jonathan