Rackham fellow Institute Advanced Study, Princeton, 1941-1942. Instructor mathematics Cornell Univercity, 1942-1943. Research mathematician Brown U., 1943.
Research associate Columbia, 1944-1945, New York University, 1945-1946. Rockefeller fellow Marine Biological Laboratory, Woods Hole, Massachusetts and University of Chicago, 1946-1947. Research associate University of Chicago, 1947-1949, member of faculty, 1949-1950, professor, 1954-1960, department chairman, 1956-1959.
Professor University of Michigan, 1960-1964. Eugene Higgins professor statistics Yale, 1964-1971. Guggenheim fellow Paris, France and Cambridge, England, 1951-1952, Rome, Italy, 1968.
Fulbright grantee, France, 1951-1952. Fellow Center Advanced Study Behavioral Science, 1963-1964.
Born November 20, 1917