He had retired from there as a professor of human genetics and development.

His father retired as a professor of architectural design at Yale.

He retired as a full professor of history in 1975.

Having retired as a professor in 1930, he died on 1 October 1933.

He retired in 1971 as a professor of economics there.

His father retired as a professor of health policy at American University.

He retired as an emeritus professor in 1989 but continued to research and write.

He retired as an emeritus professor of history in 1989.

His father retired as a professor of animal science at the university there.

His father retired from there as an associate professor of psychiatry.