^Hardenberg, Horst O. (1992). Samuel Morey and his atmospheric engine. SP-922. Warrendale, Pa.: Society of Automotive Engineers. ISBN1-56091-240-5.
^Watson, Bruce (August 1999). "Science Makes a Better Lighthouse Lens". Smithsonian. 30: 30.
^Peters, Tom F.; Andrea L. (1987). Transitions in Engineering: Guillaume Henri Dufour and the Early 19th Century Cable Suspension Bridges. Basel: Birkhauser. ISBN3-7643-1929-1.
^Johnson, Rossiter; Brown, John Howard, eds. (1904), "Thomas William Evans", The Twentieth Century Biographical Dictionary of Notable Americans, vol. 4, Boston, MA: The Biographical Society, retrieved 2009-06-12.