De Land, Fred; John C. McMynn; Frederic Auten Combs Perrine; Carl E. Kammeyer (October 1904). Gould, Geo H. (ed.). "The National Convention". Telephone Magazine. Google eBook. 24 (157). Chicago: The Telephone Magazine Publishing Co.: 137. Retrieved 31 March 2012.
De Land, Fred; John C. McMynn; Frederic Auten Combs Perrine; Carl E. Kammeyer (October 1904). Gould, Geo H. (ed.). "The National Convention". Telephone Magazine. Google eBook. 24 (157). Chicago: The Telephone Magazine Publishing Co.: 137. Retrieved 31 March 2012.
McMeal, Harry B. (July 1 – December 30, 1922). "Personal and Biographical Notes". Telephony the American Telephone Journal. 83. Chicago: Telephone Publishing Corporation: 32. Retrieved 1 April 2012.
McMeal, Harry B. (July 1 – December 30, 1922). "Personal and Biographical Notes". Telephony the American Telephone Journal. 83. Chicago: Telephone Publishing Corporation: 32. Retrieved 1 April 2012.
Frank DeWitt Reese (1997). "Volume 14". In Froehlich, Fritz E. (ed.). The Froehlich/Kent Encyclopedia of Telecommunications. New York, New York: Marcel Dekker, Inc. p. 111. ISBN0-8247-2912-9. Retrieved 19 March 2012.