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Joseph Story (1833). “Commentaries on the Constitution of the United States: With a Preliminary Review of the Constitutional History of the Colonies and States, Before the Adoption of the Constitution”, p.708
William Blackstone, St. George Tucker (1996). “Blackstone's Commentaries: With Notes of Reference to the Constitution and Laws, of the Federal Government of the United States, and of the Commonwealth of Virginia: With an Appendix to Each Volume, Containing Short Tracts Upon Such Subjects as Appeared Necessary to Form a Connecte”, p.300, The Lawbook Exchange, Ltd.