Relief shown by hachures on some sheets. Depths shown by soundings on some sheets. On some sheets: Entered according to Act of Congress, by Capt. Seward Porter, in the year 1837, in the Clerks office of the District Court of Massachusetts. Some sheets lack geographic coordinates and bar scale. Orientation varies. Sheets numbered: No. 1 ... No. 9. Ristow. American maps and mapmakers. Available ...
Contributor:Porter, Seward - Moody - T. Moore's Lithography
Scale ca. 1:48,500. Relief shown by hachures. Depths shown by soundings. Available also through the Library of Congress Web site as a raster image. LC copy imperfect: Deterioration along the bottom right edges. Vault AACR2
Contributor:[Des Barres, Joseph F. W. (Joseph Frederick Wallet)] - [Des Barres, Joseph F. W.