Noah Webster (1785). “Sketches of American Policy Under the Following Heads: I. Theory of Government, II. Governments on the Eastern Continent, III. American States, Or, the Principles of the American Constitutions Contrasted with Those of European States, IV. Plan of Policy for Improving the Advantages and Perpetuating the Union of the American States”, p.27, The Lawbook Exchange, Ltd.
Aldo Leopold (2013). “Aldo Leopold: A Sand County Almanac & Other Writings on Conservation and Ecology: (Library of America #238)”, p.229, Library of America