He joined the faculty as a professor of English in 1933.

The following year he joined the Harvard law faculty as a professor.

In 1986, he joined the faculty as an assistant professor.

In 1956, he joined the graduate business school there as a professor of finance.

He joined the faculty as an assistant professor of finance in 1952.

He join the faculty as an assistant professor of surgery in 1978.

He joined the faculty at Syracuse in 1966 as a professor of international trade and investment.

He joined the faculty at Yale in 1961 as an assistant professor.

He joined the faculty at Rochester the same year as an assistant professor of computer science.

Three years later, he joined the Fordham faculty as a professor of law.