1. Calhoun, John C. , “A Disquisition on Government: And a Discourse on the Constitution and Government of the United States,” Cralle, Richard K. , ed. (South Carolina: Walker and James, 1851), 21.
2. The Separation of State and Local Revenues;Seligman;State and Local Taxation: National Conference under the Auspices of the National Tax Association: Addresses and Proceedings,1907