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In 1938, with the help of Charles W. Morris, Reichenbach moved to the United States to take up a professorship at the University of California, Los Angeles in its Philosophy Department. Reichenbach helped establish UCLA as a leading philosophy department in the United States in the post-war period. Carl Hempel, Hilary Putnam, and Wesley Salmon were perhaps his most prominent students. During his time there, he published several of his most notable books, including "Philosophic Foundations of Quantum Mechanics" in 1944, "Elements of Symbolic Logic" in 1947, and "The Rise of Scientific Philosophy" (his most popular book) in 1951.