No - it's not ARSC. It was from the 85th (!) AES Conference in L.A. in
1988. Two talks: One on 100th Anniversary of Magnetic Recording (Oberlin Smith)
and one on 100th Anniversay of disk recording (Emile Berliner). The latter
paper was written by Oliver Berliner but read by Ray Dolby.
I posted on Dropbox for those interested. I'll leave up a few days.