contains a public library of horology. In North America The two leading specialised horological museums in North America are the National Watch and Clock Museum in Columbia, Pennsylvania, and the American Clock and Watch Museum in Bristol, Connecticut. Another museum dedicated to clocks is the Willard House and Clock Museum in Grafton, Massachusetts. One of the most comprehensive horological libraries open to the public is the National Watch and Clock Library in Columbia, Pennsylvania. Organizations Notable scholarly horological organizations include: American Watchmakers-Clockmakers Institute – AWCI (United States of America) Antiquarian Horological Society – AHS (United Kingdom) British Horological Institute – BHI (United Kingdom) Chronometrophilia (Switzerland) Deutsche Gesellschaft für Chronometrie – DGC (Germany) Horological Society of New York – HSNY (United States of America) National Association of Watch and Clock Collectors – NAWCC (United States of America) UK Horology - UK Clock & Watch Company based in Bristol World exhibitions Geneva Time Exhibition Salon International de la Haute Horlogerie (SIHH) Glossary See also Dictionary of Horology References Further reading Perman, Stacy, A Grand Complication: The Race to Build the World's Most Legendary Watch, Atria Books (Simon & Schuster), February 2013. Berner, G.A., Illustrated Professional Dictionary of Horology, Federation of the Swiss Watch Industry FH 1961 - 2012 Daniels, George, Watchmaking, London: Philip Wilson Publishers, 1981 (reprinted June 15, 2011) Beckett, Edmund, A Rudimentary Treatise on Clocks, Watches and Bells, 1903, from Project Gutenberg Grafton, Edward, Horology, a popular sketch of clock and watch making, London: Aylett and Jones, 1849 Timekeeping