In 1973 he moved to the University of Oklahoma, where in 1989 he was appointed David Ross Boyd Professor of Management and between 1994 to 1999 also McCasland Foundation Professor of American Free Enterprise.
He moved to the University of Oklahoma and between 1994 to 1999 also McCasland Foundation Professor of American Free Enterprise. This was in 1973. He was appointed David Ross Boyd Professor of Management. This was in 1989.