Other highlights include an exhibit of the pioneering automated machinery developed by the American Waltham Watch Company, allowing for the first time to mass-produce watches using interchangeable parts, a large selection of American pocket watches (including Railroad watches), and the "Engel Clock", a complicated "monument" clock built by Stephen Decatur Engel of Hazleton, Pennsylvania.
National Football League | National Register of Historic Places | National Hockey League | British Museum | Museum of Modern Art | England national football team | Metropolitan Museum of Art | National Basketball Association | National Science Foundation | National Geographic | National Trust | National Endowment for the Arts | National Geographic Society | Argentina national football team | National Trust for Places of Historic Interest or Natural Beauty | National Park Service | National League | Australian National University | National Guard | National Geographic Channel | National Institutes of Health | American Museum of Natural History | National Guard of the United States | National Collegiate Athletic Association | United States National Research Council | National Portrait Gallery | National Academy of Sciences | Indian National Congress | United States men's national soccer team | Victoria and Albert Museum |
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.