TIMOTHY LEARY(d. 1996) American educator and advocate of drug use, he urged that we "Turn on, tune in, and drop out". Fine content A.L.S. on Biosphere 2 letterhead, 1p. 4to., [n.p., n.d.], in part: "...You ask me if I prefer to be a psychologist, actor, etc. Hey, a 21st century person uses electrons to broadcast & communicate in ALL modes. In the industrial age you HAD A PROFESSION - now use any & every mode to communicate...". Very good. Leary was a friend of Roy Walford, the scientist who was later one of the eight who spent two years sealed inside Biosphere 2 in the Arizona desert. $200-300