 He served in this capacity until he retired in 1964.He received honorary doctorates from Boston University (Sc.D., 1946), the Stevens Institute of Technology (Sc.D., 1951), Grinnell College (D.H.L., 1951) and Yeshiva University (D.H.L., 1957).Laurence died in 1977 in Majorca, Spain, of complications from a blood clot in his brain.