Admitted to Colorado bar, 1935. From instructor to associate professor University of Minnesota, 1936-1956, professor department political science, 1956-1983, department chairman, 1961-1966, director Center International Relations and Area Studies, 1948-1965. Lecturer public law Columbia, 1946.
Visiting associate professor political science University of California at Berkeley, 1955-1956. Visiting professor political science U. Hawaii, 1966-1967. Research director Minnesota Committee against Bricker Amendment, 1953-1955.
Radio commentator Minneapolis Foreign Policy Association, 1954-1955. Regional director legal research Attorney General’s Survey of Release Procedures, 1936-1937.
Served from Second lieutenant to captain United States Army Air Force, 1942-1946. Member American Association United Nations (director Minnesota 1948-1968, vice president 1950-1955, chairman constitutional committee 1954, chairman policy committee 1955-1966), International Law Association, American Bar Association, Minnesota Atlantic Union, American Society International Law, American Political Science Association, Midwest Political Science Association.