Size18.25 in. x 19.5 in. Overall 24 in. x 26 in. and 9.5 in. x 11.75 in. Overall 16.25 in. x 18.5 in.
Preliminary Chart of Nantucket Shoals together with Tidal Currents of Nantucket Shoals, 1854, Chart in a molded Bird’s Eye Maple, Tidal Currents matted and framed
18.25 in. x 19.5 in. Overall 24 in. x 26 in. and 9.5 in. x 11.75 in. Overall 16.25 in. x 18.5 in.