Address to the Nation on VietnamWar, 3 Nov. 1969. The term silent majority is found as early as 1870, when the Economist (19 Nov.) referred to "the silent majority which so seldom appears at the polls." See Petronius 2; Edward Young 1
Thomas Jefferson, Henry Augustine Washington (1854). “The Writings of Thomas Jefferson: Being His Autobiography, Correspondence, Reports, Messages, Addresses, and Other Writings, Official and Private : Published by the Order of the Joint Committee of Congress on the Library, from the Original Manuscripts, Deposited in the Department of State”, p.591