I was a founder member of THAS (wasn't called that then, I seem to remember), back in the 70s, and left them a few years later, when it sort of got taken over by "others" and became very cliquey.
Somewhere I still have all the early correspondence (and the first "club" newsletters) between me and the BBC, who helped me get in touch with Dave Emery, I think his name was ,who appeared on the Nationwide programme, telling of his plans and urging the Beeb to release the Hancock archive.
And so it was born, with about four of us I think, and I was the tape librarian.