Ralph Waldo Emerson (1844). “An Address Delivered in the Court-house in Concord, Massachusetts, on 1st August, 1844: On the Anniversary of the Emancipation of the Negroes in the British West Indies”, p.30
Joseph Story (1851). “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.322