 He also trained John R. Swanton (who studied with Boas at Columbia for two years before receiving his doctorate from Harvard in 1900), Paul Radin (1911), Ruth Benedict (1923), Gladys Reichard (1925) who had begun teaching at Barnard College in 1921 and was later promoted to the rank of professor, Ruth Bunzel (1929), Alexander Lesser (1929), Margaret Mead (1929), and Gene Weltfish (who defended her dissertation in 1929, although she did not officially graduate until 1950 when Columbia reduced the expenses required to graduate), E. Adamson Hoebel (1934), Jules Henry (1935), George Herzog (1938),and Ashley Montagu (1938).His students at Columbia also included Mexican anthropologist Manuel Gamio, who earned his Master of Arts degree after studying with Boas from 1909 to 1911, and became the founding director of Mexico's Bureau of Anthropology in 1917; Clark Wissler, who received his doctorate in psychology from Columbia University in 1901, but proceeded to study anthropology with Boas before turning to research Native Americans; Esther Schiff, later Goldfrank, worked with Boas in the summers of 1920 to 1922 to conduct research among the Cochiti and Laguna Pueblo Indians in New Mexico; Gilberto Freyre, who shaped the concept of "racial democracy" in Brazil; Viola Garfield, who carried forth Boas's Tsimshian work; Frederica de Laguna, who worked on the Inuit and the Tlingit; and anthropologist, folklorist and novelist Zora Neale Hurston, who graduated from Barnard College, the women's college associated with Columbia, in 1928, and who studied African American and Afro-Caribbean folklore.Boas and his students were also an influence on Claude Lévi-Strauss, who interacted with Boas and the Boasians during his stay in New York in the 1940s.