Whitney, John (fl. 1801), Philadelphia; also made optical instruments.
Whitney, Thomas (fl. 1798-1821), Philadelphia; also made optical and surveying instruments.
Williams, William (1737/38-1792), Boston; also made nautical instruments.
Witt, Christopher (fl. 1710-1765), Germantown, Pa.; also made clocks.
NAUTICAL
Bulmain & Dennies (fl. 1799), New York.
Clark, Robert (fl. 1785), Charleston, S.C.; also made surveying and optical instruments.
Condy, Benjamin (fl. 1756-92, d. 1798), Philadelphia; also made mathematical instruments.
Davenport, William (fl. 1800-1820), Philadelphia; also made mathematical and surveying instruments.
Dean, William (?-1797), Philadelphia; also made surveying instruments.