Miller, Aaron (fl. 1748-1771), Elizabeth, N.J.; also made clocks and directional compasses. Newell, Andrew (1749-1798), Boston; also made mathematical instruments and directional compasses. Platt, Augustus (1809-1886), Columbus, Ohio; also made mathematical and surveying instruments. Platt, Benjamin (1757-1833), Danbury, Litchfield, and New Milford, Conn.; Lanesboro, Mass.; and Columbus, Ohio; also made directional compasses and clocks. Potter, John (fl. 1785), Brookfield, Mass. Rittenhouse, Benjamin (1740-c. 1820), Philadelphia; also made astronomical instruments. Rittenhouse, David (1732-1796), Philadelphia; also made astronomical instruments. Rittenhouse & Evans (fl. 1770's), Philadelphia. Stiles & Baldwin (fl. 1791), Northampton, Mass. Stiles & Storrs (fl. 1792), Northampton, Mass. Thacher, Charles, probably Boston. Thaxter, Samuel (1769-1842), Boston; also made nautical and mathematical instruments. Wall, George Jr. (fl. 1788), Bucks County, Pa. Warren, Benjamin (fl. 1740-1790), Plymouth, Mass.; also made nautical instruments. White, Peregrine (1747-1834), Woodstock, Conn.; also made clocks. Whitney, Thomas (fl. 1798-1821), Philadelphia; also made mathematical and optical instruments. Williams, William (1737/38-1792), Boston; also made nautical instruments. Bibliography of Published Sources ADAMS, GEORGE. _Mathematical and geographical essays_. London, 1791. ABBOTT, KATHERINE M. _Old paths and legends of New England_. New York: G. P. Putnam's Sons, 1909. BABB, MAURICE J. David Rittenhouse. _The Pennsylvania Magazine of History and Biography_ (July 1932), vol. 56, no. 223, pp. 193-224. BARTON, WILLIAM. _Memoirs of the life of David Rittenhouse, L.L.D., F.R.S_. Philadelphia, 1813. BEDINI, SILVIO A. A compass card by Paul Revere (?). _Yale Library Gazette_ (July 1962), vol. 37, no. 1, pp. 36-38. BEDINI, SILVIO A. _Ridgefield in review_. New Haven: Walker-Rackliffe Co., 1958. BENTLEY, WILLIAM. _The diary of William Bentley, D.D._ Salem, Mass., 1905. BION, NICOLAS. _Traite de la construction et des principaux usages des instruments de mathematiques_. Paris, 1709. Transl. Edmund Stone, London, 1724. BRANCH, W. J. V., and BROOK-WILLIAMS, Capt. E. _A short history of navigation_. Annapolis, Md.: Weems System of Navigation, 1942. BREWSTER, CHARLES W. _Rambles about Portsmouth_. Ser. 1. Portsmouth, N.H.: L. W. Brewster, 1859. ----. _Rambles about Portsmouth_. Ser. 2. Portsmouth, N.H.: L. W. Brewster, 1869. BRIDENBAUGH, CARL. _The colonial craftsman_. New York: N.Y. University Press, 1950. ---- and BRIDENBAUGH, J. _Rebels and gentlemen: Philadelphia in the age of Franklin_. New York: Reynals and Hitchcock, 1942. BRIGHAM, CLARENCE S. _Paul Revere's engravings_. Worcester, Mass.: American Antiquarian Society, 1954. CAJORI, F. _The teaching and history of mathematics in the United States_. (Bureau of Education Circular of Information 3.) Washington: Bureau of Education, 1890.