Carl Sagan’s Newly Released Pot Papers Reveal A Cosmos

Yes, Carl loved his smoke, to bad he had to hide his identity as we all do to one degree or another. At least until this "Reefer Madness" mentality is a thing of the past.
http://marijuana-uses.com/mr-x/

Ooops, didn't realize the same link is available (in 2 spots) on your original post.