Timothy Leary Autographs

Timothy Francis Leary (October 22, 1920 – May 31, 1996) was an American psychologist and author known for his strong advocacy of psychedelic drugs. Evaluations of Leary are polarized, ranging from "bold oracle" to "publicity hound". According to poet Allen Ginsberg, he was "a hero of American consciousness", while writer Tom Robbins called him a "brave neuronaut". President Richard Nixon disagreed, calling Leary "the most dangerous man in America". During the 1960s and 1970s, at the height of the counterculture movement, Leary was arrested 36 times.
As a clinical psychologist at Harvard University, Leary founded the Harvard Psilocybin Project after an experience with magic mushrooms he had in Mexico in 1960. For two years, he tested psilocybin's therapeutic effects, in the Concord Prison Experiment and the Marsh Chapel Experiment. He also experimented with lysergic acid diethylamide (LSD), which was also legal in the US at the time. Other Harvard faculty questioned his research's scientific legitimacy and ethics because he took psychedelics himself along with his subjects and allegedly pressured students to join in. Harvard fired Leary and his colleague Richard Alpert (later known as Ram Dass) in May 1963. Many people learned of psychedelics after the Harvard scandal. Leary continued to publicly promote psychedelic drugs and became a well-known figure of the counterculture of the 1960s; he popularized catchphrases that promoted his philosophy, such as "turn on, tune in, drop out", "set and setting", and "think for yourself and question authority".
Leary believed that LSD showed potential for therapeutic use in psychiatry. He developed an eight-circuit model of consciousness in his 1977 book Exo-Psychology and gave lectures, occasionally calling himself a "performing philosopher". He also developed a philosophy of mind expansion and personal truth through LSD. He also wrote and spoke frequently about transhumanism, human space migration, intelligence increase, and life extension (SMI²LE).
Read more about Timothy Leary on Wikipedia

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Traded items with a signature of Timothy Leary

The most expensive item with a signature of Timothy Leary (Timothy Leary Autographed 3x5 Index Card) was sold in June 2025 for $8,500.00 while the cheapest item (Neuropolitics Timothy Leary 1977 Signed) found a new owner for $3.25 in February 2019. The month with the most items sold (3) was December 2025 with an average selling price of $130.50 for an autographed item of Timothy Leary. Sold items reached their highest average selling price in November 2025 with $1,007.95 and the month that saw the lowest prices with $14.99 was September 2015. In average, an autographed item from Timothy Leary is worth $119.24.

Most recently, these items with a signature of Timothy Leary were sold on eBay - click here for more items.

Picture	Item Title	Price	Store
	Timothy Leary Autographed Soft Cover Info-Psychology	$50.00
	Timothy Leary Autographed Soft Cover Info-Psychology	$50.00
	Timothy Leary Autographed Soft Cover Info-Psychology	$50.00
	Timothy Leary Signed Autographed 3x5 Card JSA Cert Psychologist LSD Advocate	$354.95
	Timothy Leary Signed Autographed 3x5 Card JSA Cert Psychologist LSD Advocate	$354.95
	Timothy Leary Signed Autographed 3x5 Card JSA Cert Psychologist LSD Advocate	$354.95
	Timothy Leary Signed Autographed 8x10 Photo JSA Cert Psychologist LSD Advocate	$1,007.95
	Timothy Leary Signed Autographed 8x10 Photo JSA Cert Psychologist LSD Advocate	$1,007.95
	Timothy Leary Signed Autographed 8x10 Photo JSA Cert Psychologist LSD Advocate	$1,007.95
	Timothy Leary Signed Index Card (JSA)	$150.00
	Timothy Leary Signed Index Card (JSA)	$150.00
	Timothy Leary Signed Index Card (JSA)	$150.00
	Timothy Leary • Signed Cut Autograph • Matted Display • 1960s Counterculture LSD	$130.50
	Timothy Leary • Signed Cut Autograph • Matted Display • 1960s Counterculture LSD	$130.50
	Timothy Leary • Signed Cut Autograph • Matted Display • 1960s Counterculture LSD	$130.50