The Logic of Hegel

The Logic of Chance, 3rd edition An Essay on the Foundations and Province of the Theory of Probability, With Especial Reference to Its Logical Bearings and Its Application to Moral and Social Science and to Statistics

Prolegomena to the Study of Hegel's Philosophy, and Especially of His Logic

Logic as the Science of the Pure Concept

Encyclopaedia Britannica, 11th Edition, "Chicago, University of" to "Chiton" Volume 6, Slice 2

The History of University Education in Maryland The Johns Hopkins University (1876-1891). With supplementary notes on university extension and the university of the future