I found something else in my archives that will interest you. I 
have an old Unix User Group tape (tp format). [Now ug091377-ar.tar.gz
which has the original ar files and ug091377.tar.gz which has the
ar files exploded. This dates from Sep 14 1977 -- Warren]

Jay R. Jaeger                                   The Computer Collection
Jay.Jaeger@msn.fullfeed.com     visit http://www.msn.fullfeed.com/~cube
0 README 1998-02-25 23:39:58Z 413 B text/plain; charset=utf-8
1 ug091377-ar.tar.gz 1996-02-19 04:32:54Z 2.5 MiB application/gzip
2 ug091377.tar.gz 1996-02-19 04:56:11Z 2.6 MiB application/gzip