Francis A. Allen graced the law faculties of five universities in the course of a remarkable, forty-six-year teaching career. In that time, he established himself as one of the half-dozen greatest twentieth century American scholars of criminal law and criminal procedure.
Kamisar, Yale. "In Memoriam: Francis A. Allen." U. Mich. J. L. Reform 41, no. 2 (2008): 373-4.