Instructor Columbia, 1937-1938, Columbia College Pharmacy, 1938-1939. Instructor Poly-Technology Institute Brooklyn, 1938-1948. From instructor to associate professor Adelphi U., 1939-1954, professor, since 1954, department chairman German and general linguistics, since 1940.
Editorial consultant British World Language Dictionary, 1955. Consultant Office Education, Washington, 1960. Director Langs.-of-World Archives, Washington, 1960-1961.