Jaime de Angulo (1887–1950) was a linguist, novelist, and ethnomusicologist in the western United States. He was born in Paris of Spanish parents. He came to America in 1905 to become a cowboy, and eventually arrived in San Francisco on the eve of the great 1906 earthquake. He lived a picaresque life including stints as a cowboy, medical doctor and psychologist, a decade of field work in Native American linguistics and anthropology, and over forty years participation in the literary-artistic-bohemian culture of the San Francisco Bay Area. Career De Angulo began his career in field linguistics and anthropology at the University of California, Berkeley in the early 1920s, shortly after his marriage to L. S. ("Nancy") Freeland. (He had already acquired an M.D. from Johns Hopkins and done research in biology at Stanford.) During the next decade he and his wife lived for intermittent periods among several native Californian tribes to study their cultures, languages and music. As a linguist he contributed to the knowledge of more than a dozen native Northern Californian and Mexican Indian languages and music-systems and collected additional field data on their cultures and oral traditions. De Angulo was particularly interested in the semantics of grammatical systems of the tribes he studied, and was a pioneer in the study of North American ethnomusicology, particularly in his recordings of native music, and he was especially concerned to develop an existential understanding of Native American cosmology, social psychology, values and culture. From the perspective of the academic scholarship of the period, this amounted to "going native." His key exposition of this matter is “Indians In Overalls”, first published in 1950 in The Hudson Review and subsequently as a book. De Angulo corresponded with Franz Boas, Alfred L. Kroeber, and Edward Sapir. Much of his fieldwork was funded by the American Council of Learned Societies Committee on Research in Native American Languages, under direction chiefly of Boas, and in part through Kroeber, head of Berkeley's Department of Anthropology, which published some of it and which archives some of his notes. As a phonetician, he was largely self-taught. He had no formal training in the field, but acquired a basis in the discipline and discourse from trained linguists he worked with, including Nancy Freeland; by his own account his correspondence seeking instruction "exhausted Sapir's patience". In one case, the accuracy of his record has been questioned, and some linguistic work