References
- Warren , Sidney . 1943 . American Freethought, 1860–1914 16 New York
- Sowerby , E. Millicent . 1953 . Catalogue of the Library of Thomas Jefferson Vol. II , 25 Washington
- Koch , G. Adolf . 1933 . Republican Religion: The American Revolution and the Cult of Reason , American Religion Series Vol. VII , 75 New York
- Palmer , Elihu , ed. 1803–05 . Prospect, or View of the Moral World Vol. I , 67 New York
- Robertson , John M. 1915 . A Short History of Freethought, Ancient and Modern , 3rd ed. rev. Vol. II , 385 London