Osgood Carlton

Fought in the Revolutionary War and was actually at the Battle of Bunker (Breed's) Hill. He stayed on in Boston and made quite a name for himself as a teacher of mathematics and astronomy (self-professored?) and as a mapmaker for Boston, Massachusetts, and the northern province of Maine. John Norman worked collaboratively with Carleton on a number of projects and was "his engraver" soon after the war. His name was used to "certify" Matthews Clark's charts, as well as the early editions of John Norman's charts. He must have been highly regarded in Boston.