Historical clue formulations

• Pioneer in psychedelics — 2023-08-27
• Timothy who wrote "Turn On, Tune In, Drop Out" — 2021-06-29
• 1960s counterculture guru Timothy — 2020-08-25
• 1960s counterculture figure — 2020-05-31
• Noted acid studier — 2014-07-19
• Doctor whom Nixon called "the most dangerous man in America" — 2011-06-02
• 1960s trip taker — 2010-02-11
• '60s guru Timothy — 2007-05-29
• 1960's tripper Timothy — 2004-01-05
• 60's guru — 2003-08-17
• "The Psychedelic Reader" collaborator — 2002-05-19
• Timothy who took trips — 2000-02-21
• "Turn on, tune in, drop out" advocate — 1999-10-07
• 60's tripper Timothy — 1994-06-05
• "Politics of Ecstasy" author — 1994-05-22