Sir William BLACKSTONE, Samuel Warren (1856). “Blackstone's Commentaries systematically abridged and adapted to the existing state of the law and constitution, with great additions. By Samuel Warren”, p.101
Edmund Burke (2014). “Revolutionary Writings: Reflections on the Revolution in France and the First Letter on a Regicide Peace”, p.52, Cambridge University Press
Grover Cleveland's Fourth Annual Message (December 1888), published in "The writings and speeches of Grover Cleveland" edited by George Frederick Parker, circa 1892.