The Berkeley School of Latin Americanist Geography was founded by the American geographer Carl O. Sauer. Sauer was a professor of geography at the University of California at Berkeley from 1923 until becoming professor emeritus in 1957 and was instrumental in the early development of the geography graduate program at Berkeley and the discipline of geography in the United States. Each generation of this research school has pursued new theoretical and methodological approaches, but their study of the peoples and places of Latin America and the Caribbean has remained the common denominator since the early 20th century. Carl O. Sauer himself did not develop a particular interest in Latin America before 1925, when Oskar Schmieder, a German geographer, disciple of Alfred Hettner, and expert in Latin American regional geography, arrived at Berkeley, coming from Córdoba, Argentina, to work as an associate professor. Obviously, his interest awoke during Schmieder's presence between 1925 and 1930. After Schmieder's departure in 1930, Carl O. Sauer began to offer seminars on the regional geography of Latin America.