Dunning, William Archibald: History of Political Theories. 4 Vol. New York: Macmillan 1902–1920.

Vol. 1: Ancient and Mediaeval. [Table of Contents] [Internet Archive]

Vol. 2: From Luther to Montesquieu. [Table of Contents] [Internet Archive]

Vol. 3: From Luther to Montesquieu. [Table of Contents] [Internet Archive]

Vol. 4: From Rousseau to Spencer. [Table of Contents] [Internet Archive]