Bowles, Thomas S. (c. 1765-1821?), Portsmouth, N.H. Breed, Aaron (late 18th to mid-19th centuries), Boston. Burnap, Daniel (1759-1838), East Windsor and Coventry, Conn.; also made clocks. Chandlee, Benjamin, Jr. (1723-1791), Nottingham, Md.; also made clocks. Chandlee & Bros. (fl. 1790-1791), Nottingham, Md.; also made clocks. Chandlee, Ellis (1755-1816), Nottingham, Md.; also made clocks. Chandlee, Ellis & Bros. (fl. 1791-1797), Nottingham, Md.; also made clocks. Chandlee, Goldsmith (c.1746-1821), Winchester, Va.; also made clocks and sundials. Chandlee, Isaac (1760-1813), Nottingham, Md.; also made clocks. Clark, Robert (fl. 1785), Charleston, S.C.; also made nautical and optical instruments. Clough, Jere (18th century), Boston. Crow, George (fl. 1754-1772), Wilmington, Del.; also made clocks. Davenport, William (fl. 1800-1820), Philadelphia; also made mathematical instruments. Dean, William (?-1797), Philadelphia; also made nautical instruments. Doolittle, Enos (1751-1806), Hartford, Conn.; also made nautical instruments and clocks. Doolittle, Isaac, Jr. (1759-1821), New Haven, Conn.; also made clocks. Dupee, John (after 1761), Boston. Ellicott, Andrew (1754-1820), Baltimore; also made astronomical instruments. Ford, George, I (late 18th century to 1840), Lancaster, Pa.; also made nautical instruments. Ford, George, II (fl. 1842), Lancaster, Pa.; also made nautical instruments. Gould, John (fl. 1794), Philadelphia; also made nautical and optical instruments. Greenough, Thomas (1710-1785), Boston, also made nautical and mathematical instruments. Greenough, William (fl. 1785), Boston. Halsy, James, II (1695-1767), Boston; also made mathematical instruments. Halsy, Joseph (fl. 1697-1762), Boston. Hagger, Benjamin K. (c. 1769-1834), Boston and Baltimore; also made mathematical instruments. Hanks, Benjamin (1755-1824), Mansfield and Litchfield, Conn. Hanks, Truman (fl. 1808), Mansfield and Litchfield, Conn. Harland, Thomas (1735-1807), Norwich, Conn.; also made clocks. Heisely, Frederick A. (1759-1839), Frederick, Md., and Lancaster, Harrisburg, and Pittsburgh, Pa.; also made clocks and mathematical instruments. Heisely, George (1789-1880), Harrisburg, Pa.; also made clocks and mathematical instruments. Holcomb, Amasa (1785-1875), Southwick, Mass.; also made astronomical instruments. Houghton, Rowland (c. 1678-1744), Boston. Huntington, Gurdon (1763-1804), Windham, Conn., and Walpole, N.H.; also made clocks and other scientific instruments. Jacks, James (fl. 1780's), Charleston, S.C.; also made mathematical instruments. Kennard, John (1782-1861), Newmarket, N.H.; also made clocks. Lamb, A., & Son (1780's), New York; also made mathematical and nautical instruments. Lamb, Anthony (1703-1784), New York; also made mathematical and nautical instruments. Lamb, John (1735-1800), New York; also made mathematical and nautical instruments.