Allen County Public Library Genealogy Center:The Historical Society of Southern California quarterly. Los Angeles, Calif.: The Society, 1949 (archive.org[abgerufen am 1.Juni 2018]).
University of California Libraries:Sixty years in Southern California, 1853–1913, containing the reminiscences of Harris Newmark. New York, The Knickerbocker press, 1916 (archive.org[abgerufen am 1.Juni 2018]).