Druglink obituary 1996 – Timothy Leary 1920 – 1996 by Harry Shapiro Timothy Leary, whose slogan ‘tune in, turn on, drop put’ was the mantra of the sixties died of cancer on May 31st aged 75. Timothy Leary 1920 – 1996 (PDF) Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Google+ (Opens in new window)