I saw the video you shared on the civfan forum and read that you are also looking for old screenplays, some that are no longer available on the World Wide Web. I have saved some civilization III scenarios before, I'll be happy to send them out if you find one you haven't already found. I like your idea of keeping old and new modes of civilization in a safe place.
I am currently looking for a sound map of Civ II units. Kobyashi had one on here at one time, but I can't seem to find it. If you happen to know where I could find it, that would be terrific. Thanks very much for your work saving scenarios files.