![Three volumes by noted psychedelic researchers Robert E.L. Masters and Jean Houston - Price Estimate: $150 - $250 Three volumes by noted psychedelic researchers Robert E.L. Masters and Jean Houston - Price Estimate: $150 - $250](https://www.pbagalleries.com/images/lot/1469/146923_0.jpg)
Three volumes by noted psychedelic researchers Robert E.L. Masters and Jean Houston - Price Estimate: $150 - $250
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The Varieties of Psychedelic Experience: The Classic Guide to the Effects of LSD on the Human Psyche: Masters Ph.D., Robert, Houston Ph.D., Jean: 9780892818976: Amazon.com: Books
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Psychedelic Art: Robert E. L. Masters, Jean Houston, Barry N. Schwartz, Marshall Lee, Stanley Krippner: Amazon.com: Books
![Mind Games: The Guide to Inner Space (A Delta Book): Robert Masters, Jean Houston: Amazon.com: Books Mind Games: The Guide to Inner Space (A Delta Book): Robert Masters, Jean Houston: Amazon.com: Books](https://m.media-amazon.com/images/I/41TkffPZhdL._AC_UF1000,1000_QL80_.jpg)