Harold A. Innis was a distinguished political economist who was one of the first to study the history of communication. He served as a dean at the University of Toronto.

This classic book, Harold A. Innis's last, returns to print with a new introduction by James W. Carey. An elaboration of Innis's earlier theories, Changing Concepts of Time looks at then-new technological changes in communication and considers the different ways in which space and time are perceived. Innis explores military implications of the U.S. Constitution, freedom of the press, communication monopolies, culture, and press support of presidential candidates, among other interesting and diverse topics.

Chapter 1 Introduction to the Rowman & Littlefield Edition Chapter 2 Preface Chapter 3 1. The Strategy of Culture Chapter 4 2. Military Implications of the American Constitution Chapter 5 3. Roman Law and the British Empire Chapter 6 4. The Press, a Neglected Factor in the Economic History of the Twentieth Century Chapter 7 5. Great Britain, the United States, and Canada