This was found by Tijs Wiebe Lefering <twlevo@gmail.com> on 2010-10-24, 
included in 

ftp://ftp.cs.berkeley.edu/ucb/sprite/mab.tar.Z

-rw-rw-r--    1 ftp      ftp       2430031 Feb 17  1993 mab.tar.Z

was a partial copy of gcc-1.25 patched for their project.  All of
the documentation, copyright, README, ChangeLog files are missing;
it looks like some of the source files are also missing (compared
to the gcc-1.22 and gcc-1.27 tar files) but I haven't compared
very carefully.
