Major works
• De parodiis eis quibus exprimitur a comicis Graecis iudicium seu censura. Leipzig: Friedrich Andrae, 1875. (Ph.D. dissertation) • The Protagoras of Plato, with an Introduction and Notes. New York: Harper & Brothers, 1881. • ''A Complete Lexicon of the Latinity of Caesar's Gallic War.'' Boston: Ginn, 1891. • M. Tulli Ciceronis Oratio Philippica secunda. Boston: D. C. Heath, 1908. • Testimonium Animae; or, Greek and Roman before Jesus Christ: A Series of Essays and Sketches Dealing with the Spiritual Elements in Classical Civilization New York: G. E. Stechert, 1908. • Annals of Cæsar: A Critical Biography with a Survey of the Sources, for More Advanced Students of Ancient History and Particularly for the Use and Service of Instructors in Cæsar. New York: G. E. Stechert, 1911. • C. Julius Caesar. Sein Leben nach den Quellen kritisch dargestellt. Leipzig: B. G. Teubner, 1912. • Cicero of Arpinum: A Political and Literary Biography, Being a Contribution to the History of Ancient Civilization and a Guide to the Study of Cicero. New Haven: Yale University Press, 1914. • Coeditor. Hellenic Civilization: Records of Civilization; Sources and Studies. New York: Columbia University Press, 1915. • From Augustus to Augustine: Essays and Studies Dealing with the Contact and Conflict of Classic Paganism and Christianity. Cambridge: Cambridge University Press, 1923. • From Maumee to Thames and Tiber: The Life Story of an American Classical Scholar. New York: New York University Press, 1930 (autobiography). == References ==