A Defense of Ontological Liberalism
- An article by Curt Ducasse
- http://ditext.com/ducasse/liberal.html

Philosophy as a Science (1941)
- A book by Curt Ducasses, a professor at Brown University, who was one of the earliest American "analytic philosophers." This book is his mature reflection on the nature of philosophy.
- http://ditext.com/ducasse/ducasse.html