Innis, Harold. Empire and Communications. Rev. by Mary Q. Innis; foreword by Marshall McLuhan. Toronto, Ont.: University of Toronto Press, 1972. xii, 184 p. N.B.: "Here he [i.e. Innis] develops his theory that the history of empires is determined to a large extent by their means of communication."—From the back cover of the book's pbk. ed. ISBN 0-8020-6119-2 pbk
