Irmgard Weitlaner-Johnson (1914–2011) was an American anthropologist who was an expert in Mexican textiles.

[1] She studied cultural anthropology and ethnographic textiles at the University of California, Berkeley.

[1] In July 1938, in Huautla de Jimenez, she and her husband, anthropologist Jean Bassett Johnson, along with Bernard Bevan and Louise Lacaud, were some of the first outsiders to witness and record a Mazatec healing ceremony where hallucinogenic psilocybin mushrooms (teonanacatl) were consumed.

[2] Weitlaner-Johnson began her systematic study of Mexican textiles in 1951 and later became curator of textiles at Mexico's National Museum of Anthropology.

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