^نيوتن هوراس وينشل and Winchell, Alexander Newton (1917). "The Winchell Genealogy", 2nd Ed. Minneapolis, MN: Horace V. Winchell.
^Eckel, Edwin, 1982, GSA Memoir 155, The Geological Society of America — Life History of a Learned Society: Boulder, Colorado, Geological Society of America Memoir 155, 168 p., (ردمك 0-8137-1155-X).
^Fairchild, Herman LeRoy, 1932, The Geololgical Society of America 1888-1930, a Chapter in Earth Science History: New York, The Geological Society of America, 232 p.
