Relief shown by hachures. Shows routes explored for Pacific railroad by Captain J.W. Gunnison and Lieutenant E.G. Beckwith; shows route for a proposed railroad to the West Coast as Governor Stevens' Route &amp; line of proposed Pacific railroad; and adjacent portions of neighboring states. Hand colored in pink to define territory and state boundaries. "Published by J.H. Colton &amp; Co. No. 172 William St. New York.; Entered according to Act of Congress in the year 1855 by J.H. Colton &amp; Co. in the Clerks Office of the District Court of the United Stated for the Southern District of New York." Prime meridians: Greenwich and Washington. Includes notes. At lower right: No. 50. Available also through the Library of Congress Web site as a raster image.
J.H. Colton &amp; Co.
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