In the 19th century, many clocks and watches were produced in the United States, especially in Connecticut, where many companies were formed to mass-produce quality timepieces.
Makers of American clocks included
Ansonia Clock Company, 1851–1930
Waterbury Clock Company, 1857–1944
Seth Thomas Clock Company, 1853–1930
W.L. Gilbert & Co., 1845–48 and 1851–66, later Gilbert Mfg. Co., William L. Gilbert Clock Company
Elias Ingraham & Co., 1857–60, 1861–1958
E.N. Welch Mfg. Co., 1864–1903
Sessions Clock Co., 1903–56
New Haven Clock Co., 1853–1960
F. Kroeber Clock Co., 1863–1904
Boston Clock Company, 1884–1894, founded by Joseph Eastman
