Twenty-Nine Reference Books Pertaining to New England Horology comprising: von Bertele, Hans. Marine & Pocket Chronometers. Schiffer Publishing Ltd., West Chester, PA, 1991.Ware Willard, John. Simon Willard and His Clocks. Paul P. Appel, Mamaroneck, NY, 1962.Duy Ly, Tran. Seth Thomas Clocks & Movements. 3rd ed., vol. 1, Arlington Book Company, 2004.Duy Ly, Tran. Seth Thomas Clocks & Movements. 3rd ed., vol. 2, Arlington Book Company, 2004. Foley, Paul J. Willard's Patent Time Pieces. Roxbury Village Publishing, Norwell, MA, 2002.Robinson, Dr. Roger W. and Herschel B. Burt. The Willard House and Clock Museum and the Willard Family Clockmakers. National Association of Watch and Clock Collectors, Inc., 1996.Husher, R.W. and W.W. Welch. A Study of Simon Willard's Clocks. Husher and Welch, 1980, together with 21 other examples.