Title supplied by cataloger.
Includes: "S. Channel, Broad Sound, Nix's mate on the middle of the Northern and highest of the Blue Hills," "Entering Nantasket Roads Long Id. Lt. open with S.W. part of George's Id.," "View for clearing Harding's Ledge to the South of it: See Range No. 1 Sailg. Direc.," and "Passing George's Id. Nix's Mate on the Middle of Bunker Hill Monument."