Historic Rock Ford welcomes Bob Frishman as he presents Edward Duffield: Philadelphia Clockmaker, Citizen, Gentleman 1730-1803 on Saturday, Sept. 28, at 2 p.m., in the Langmuir Education Room located on the first floor of the Rock Ford Barn, 881 Rockford Road, Lancaster, Pa. Frishman will present an informative historical overview on Edward Duffield, who was far more than a clockmaker in 18thcentury Philadelphia. While Duffield made, repaired, and sold elegant floor-standing clocks, surveying instruments, and sundials that today are in museums and private collections, he was also a wealthy property owner and active civic and Anglican Church leader. He was also a lifelong friend of Benjamin Franklin and served as executor of Franklins estate. Frishmans presentation will be supplemented with over 100 images from his newly released comprehensive biography of Duffield, which addresses all aspects of the clockmakers life and the practice of clockmaking in Colonial America. After his presentation, Frishman will have a Q&A session and also have copies of his book available for purchase and signing. Frishman lives in Andover, Mass., and is a Silver Star Fellow of the National Association of Watch and Clock Collectors and has lectured at over 100 places, including Winterthur Museum, the Museum of Fine Arts, Boston, the Henry Ford Museum, the Museum of the American Revolution, and the Horological Society of New York.Additional biographical information may be found at www.HistoricRockFord.org. This presentation is free of charge, but all guests are required to register at www.rockford.yapsody.com due to space restrictions. Historic Rock Ford, located at 881 Rockford Road, Lancaster, Pa., is comprised of the ca. 1794 General Edward Hand Mansion and the John J. Snyder Jr. Gallery of Early Lancaster County Decorative Arts.The property is open for tours from April through October. It is operated by the nonprofit Rock Ford Foundation.For more information, visit www.HistoricRockford.org.