He received emeritus status in 1969 and stayed active for the rest of his life.
He advanced to full professor in 1971 and reached emeritus status four years ago.
He reached emeritus status at the university and its museum in 1977.
He reached emeritus status in 1973, but continued his research at the school for another decade.
She reached emeritus status in 1978 but continued her research until a few months ago.
He reached emeritus status in 1987 but continued his research.
Since 2000, he has held the same title with emeritus status.
He received emeritus status as professor of international political economy in 1975 but continued to teach until about 10 years ago.
In 2006, after 40 years at Princeton, he moved to emeritus status.
He reached emeritus status in 1977 but continued to teach part time for six more years.
