Marie-Louise von Franz worked with C.G.Jung from 1934 until his death in 1961. She was a scholar of Medieval Latin and classical Greek, and her field of collaboration with Jung was the study of alchemy. To two of his major works, Aion and Mysterium Coniunctionis, she contributed related studies, one of these being a text edition of the Aurora Consurgens, published separately in the Bollingen Series. Her research was mainly into alchemy, fairy tales and dream interpretation.