Alan Shoemaker (1)

Albert Hofmann (1)

Aldous Huxley (1)

Antonio Escohotado (1)

Brigitte Grof (1)

Charles Duits (1)

Christian Funder (1)

Christopher Hill (1)

Christopher M. Bache (1)

Daniel McQueen (1)

David Jay Brown (2)

Earl Lee (1)

Giorgio Samorini (1)

J. D. Arthur (1)

James Endredy (1)

James Fadiman (1)

Jan Kounen (1)

Jean Houston (1)

Joan Parisi Wilcox (1)

John Selby (1)

Louis Lewin (1)

Mordecai Cooke (1)

Ralph Metzner (2)

Richard Louis Miller (1)

Rick Strassman (2)

Robert Masters (1)

Robert Tindall (1)

Ronald K. Siegel (1)

Ross Heaven (2)

Rowan Robinson (2)

Scott Teitsworth (1)

Simon G. Powell (1)

Thomas B. Roberts (2)

Thomas Hatsis (1)

eBook (48)

Trade Paperback (1)