There's a user on a forum called Audio Nirvana who says he has a lot of Southern Library tapes that he would possibly sell if anyone is interested in them. He also has tapes from Peer International, as well as a couple of tapes from the 80's from New Southern, Selected Sound and Bruton. Here's the page I found this info from:
audionirvana.org/forum/title-to-be-added/music-trading-post/174817-southern-music-library-reel-lot
