I'm the guy that a while ago uploaded a large Bill Cooper collection to archive.org that just got tore down.
Not sure why, but that's okay, because I also have it available as a torrent:
Not lost - just a bit harder to find.
Bonus: It includes all Extra material that I had to leave out from archive.org.
Hope it can be of use.
This is good content. Thank you backup!
Archivists are true heros of the censorship age