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
Available also through the Library of Congress Web site as a raster image. Relief shown by shading and spot heights. Designed to be folded to ca. 10 x 22 cm. Includes text. Text and col. ill. on verso. "*GPO: 1982--361-578/145."
Scale 1:62,500. Relief shown by contours and spot heights. "Compiled from 1:62,500 scale maps dated 1942, 1943, and 1956. Revised from aerial photographs taken 1970. Field checked 1971." "Polyconic projection. 1927 North American datum." Available also through the Library of Congress Web site as a raster image. Includes insets of Isle au Haut (Knox County) and Schoodie Peninsula. AACR2: 110; 651/1