[TUHS] revision history of troff -me macro set?

[saint.snit at gmail.com]

Hi,

Is there a repository of historical versions of Eric Allman's -me macro
set for troff?

(For some context: the macro set has been forked to operate with two
modern troff implementations: GNU groff and Heirloom troff.  According
to the header blocks of the respective files, groff's -me macros are
forked from version 2.31 of Allman's, and Heirloom's from version 2.14.
For help in debugging -me problems in these troff implementations,
I'm trying to locate at least these versions of the -me package as they
existed before forking.  I posted this query on the troff email list,
but no one there knew the answer, and one person suggested I ask here.)

Thanks for any pointers.