 In 1904, conflicts related to the Laboratory School lead Dewey to resign his Chicago positions and move to the philosophy department at Columbia University in New York City; there, he also established an affiliation with Columbia’s Teacher’s College. Among Dewey’s important influences at Columbia were F.J.E. Woodbridge, Wendell T. Bush, W.P. Montague, Charles A. Beard (political theory) and Franz Boas (anthropology). Dewey remained at Columbia until retirement 1930, going on to produce eleven more books.