Proposed route of the Central Pacific Railroad shown. "Entered according to Act of Congress in the year 1865 by G. W. & C. B. Colton in the Clerks Office of the District Court of the United States for the Southern District of New York." MS note: Geo. W. Nelson 52 Beekman St.. Prime meridian: GM. Relief: hachures. Graphic Scale: Miles. Projection: Polyconic. Printing Process: Lithography.