María Sabina became an accidental drug shaman in the 1960s and 70s. On June 29, 1955, R. Gordon Wasson, then a vice president of the prestigious banking firm J.P. Morgan, together with his friend, New York fashion photographer Allan Richardson, made history by becoming the first whites to participate in a velada. The nocturnal mushroom ceremony took place in the remote village of Huautla de Jimenez, in the northeast region of Oaxaca, Mexico.
Under the guidance of the now famous Mazatec curandera Maria Sabina, Wasson and Richardson each consumed six pairs of the mushroom Psilocybe caerulescens var. mazatecorum. After an hour the two men began to feel the effects, which were manifest by visions of colorful geometric patterns, palaces, and architectural vistas.