Part 23

Dupee, John fl. after 1761 Boston Surveying

Ellicott, Andrew 1754-1820 Baltimore Surveying; (also practitioner) astronomical

Emery, Samuel 1787-1882 Salem, Mass. Mathematical

Evans, George fl. 1796; d. Philadelphia Mathematical 1798

Fairman, Gideon 1774-1827 Newburyport, Mathematical (See Hooker and Mass. Fairman)

Fisher, Martin fl. 1790 Philadelphia Glass

Folger, Peter 1617-1690 Nantucket (practitioner?)

Folger, Walter, Jr. 1765-1849 Nantucket Astronomical; surveying

Ford, George fl. late 18th Lancaster, Pa. Surveying; nautical century to 1842

Ford, George, II fl. 1842 Lancaster, Pa. Surveying; nautical

Fosbrook, W. fl. 1786 or New York Surgical; dental earlier

Gatty, Joseph fl. 1794 New York and Glass; Philadelphia philosophical

Gilman, Benjamin C. 1763-1835 Exeter, N.H. Mathematical; clocks

Gilmur, Bryan fl. end of Philadelphia Mathematical; 18th century clocks

Godfrey, Thomas 1704-1749 Philadelphia Improved reflecting backstaff

Gould, John fl. 1794 Philadelphia Nautical; surgical; optical

Grainger, Samuel fl. 1719 Boston (practitioner)

Greenleaf, Stephen 1704-1795 Boston Mathematical

Greenough, Thomas 1710-1785 Boston Mathematical; surveying; nautical; astronomical

Greenough, William fl. 1785 Boston Surveying

Greenwood, Isaac, fl. 1726 Boston Surveying Sr. (practitioner)

Greenwood, Isaac, 1730-1803 Boston Mathematical Jr.

Grew, Theophilus fl. 1753 Philadelphia (practitioner)

Hagger, Benjamin c. 1769-1834 Boston and Mathematical; King Baltimore surveying

Hagger, William c. 1744-1830? Newport, R.I. Nautical Guyse

Halsie, James, I fl. 1674 Boston (practitioner)

Halsy, James, II 1695-1767 Boston Mathematical; surveying

Halsy, John fl. 1700 Boston Mathematical