Relief shown by hachures. "Entered according to act of Congress in the year 1855 by J. H. Colton &amp; Co. ..." Prime meridians: Greenwich and Washington. From Colton's general atlas, containing one hundred and eighty steel plate maps and plans, on one hundred and nineteen imperial folio sheets. 1871. Text on verso. At lower right: No. 122. LC copy stamped on: 626888. Available also through the Library of Congress Web site as a raster image.
G.W. &amp; C. Colton &amp; Co.
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