(San Francisco), City Lights Books, (1963). A volume of letters between Burroughs and Ginsberg that borders on being an epistolary novel, and deals with their respective experiences, over a number of years, with the South American hallucinogenic drug yage, also known as ayahuasca. Inscribed by Burroughs to Richard Aaron in the year of publication: "For Richard Aaron/ Exchange of manuscripts on Monday July 3, 1963/ This book concerns time compression 1952-53/ William S. Burroughs." Spine-cocked; inexpertly tape reinforced at the front hinge; only good in wrappers, but a contemporary inscription (with some sort of historical content) and a good association, both of which are uncommon. [#033131] SOLD