In copyright
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Credit
Mescaline: 'Subjective experiences caused by mescaline (written on Saturday March 14th 1936)'; with reprint by Erich Guttmann, 'Artificial Psychoses produced by mescaline' from <i>Journal of Mental Science</i> May 1936; and letter to 'A.C.' 4 Dec 1948. In copyright. Source: Wellcome Collection.