^والاس ستغنر, Beyond the Hundredth Meridian: John Wesley Powell and the Second Opening of the West, University of Nebraska:Lincoln
^"Geological and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-deltaic Reservoir". By Thomas C. Chidsey, Thomas C. Chidsey, Jr (ed), Utah Geological Survey, 2002. (ردمك 1-55791-668-3). pp. 2–17. Partial text on Google Books. نسخة محفوظة 24 يونيو 2016 على موقع واي باك مشين.