Stanley Nadel, Little Germany: Ethnicity, Religion, and Class in New York City, 1845-80, University of Illinois Press, 1990, ISBN0-252-01677-7, p. 111 ; the New York Times has "Philip Merkel"
Georg Schuster, Die Geheimen Gesellschaften, Verbindungen und Orden, Volume 2 Leipzig: Theodor Leibing, 1906, p. 512 asserts there were 12 founders, not 10.
Joseph Anderson, Sarah Johnson Prichard, Anna Lydia Ward, The Town and City of Waterbury, Connecticut from the Aboriginal Period to the Year 1895, 3 vols. New Haven: Price & Lee, 1896, vol. 3, p. 1158.
Northeastern Reporter, Volume 85, West Publishing Company, 1909, p. 655.
Hartmut Keil and John Jentz, German Workers in Chicago: A Documentary History of Working-Class Culture from 1850 to World War I, University of Illinois Press, 1988, ISBN0-252-01458-8, pp. 6, 175.
Russell Andrew Kazal, Becoming Old Stock: the Paradox of German-American Identity, Princeton University Press, 2004, ISBN0-691-05015-5, p. 82.
Albert C. Stevens, The Cyclopaedia of Fraternities: A Compilation of Existing Authentic Information and the Results of Original Investigation as to the Origin, Derivation, Founders, Development, Aims, Emblems, Character, and Personnel of More Than Six Hundred Secret Societies in the United States, New York: Treat, 1899, OCLC3796387, p. 235.
Arthur Preuss, A Dictionary of Secret and Other Societies St. Louis: Herder, 1924, repr. Detroit: Gale, 1966, OCLC265159, p. 150
