United States. President, George Washington, United States (1825). “The speeches, addresses and messages, of the several presidents of the United States, at the openings of Congress and at their respective inaugurations: Also, the Declaration of independence, the Constitution of the United States, and Washington's farewell address to his fellow-citizens”, p.91
Jane Addams (1961). “Twenty Years at Hull-House, with Autobiographical Notes, by Jane Addams. With a Foreword by Henry Steele Commager, Drawings by Norah Hamilton”
"Social Statics, or The Conditions essential to Happiness specified, and the First of them Developed" by Herbert Spencer, (Pt. II, Ch. 4 : Derivation of a First Principle, § 3), 1851.