Yeah, can't go wrong with published old books. Yes it did cross my feed. I miss occasionally hearing some bites of Alan Watts or Terrence McKenna talks in music mixes. Funnily enough those seem to have disappeared from youtube from what I've heard. I already was taking everything with a grain of salt back then. These days with voice deep fakes, I may need a handfull of salt. I just don't waste time with it anymore.
I'm sure archive.org has a bunch of old recordings though. So definitely go there.