A new map of the United States of America / by J.H. Young ; engraved by J.L. Hazzard & E. Yeager.Young, J. H. (James Hamilton)1857"Entered according to Act of Congress in the year 1856 by Charles Desilver in the clerks office of the District Court of the Eastern DistrictAlso shows proposed western railroad routes.Prime meridians Washington and Greenwich.Relief shown by hachures.cartographic