Edgard Varèse lecture, edited by Chou Wen-Chung, published in: "391", Nr. 5. June 17, 1917, translated by Louise Varèse; Quoted in: "Classic Essays on Twentieth-Century Music: A Continuing Symposium", 1996.
Francis Parkman, David Levin (1983). “France and England in North America: Pioneers of France in the New World. The Jesuits of North America in the seventeenth century. La Salle and the discovery of the Great West. The old régime in Canada”, p.145, Library of America