- The Science of Logic: An Inquiry Into the Principles of Accurate Thought and Scientific Method; Volume 2
- The Science of Logic; an Inquiry Into the Principles of Accurate Thought and Scientific Method; Volume 1
- Ontology Or The Theory Of Being: An Introduction To General Metaphysics (1918)
- Epistemology; Volume 2
- Epistemology; Or, the Theory of Knowledge: An Introduction to General Metaphysics; Volume 1