This is a fine example of Thomas Cowperthwait and S. A. Mitchell's 1854 map of Venezuela, Colombia (New Grenada) and Ecuador. The whole is engraved and colored in Mitchell's distinctive style with green border work and vivid pastels. Political and topographical features are noted and color coded with elevation rendered by hachure. The railroad across the Isthmus of Darien (Panama) is shown via an inset in the lower right quadrant.This map was prepared by S. A. Mitchell for publication by the Philadelphia firm of Thomas Cowperthwait and Co. as plate no. 41 in the 1854 edition of Mitchell's New General Atlas. Dated and copyrighted, 'Entered according to act of Congress in the year 1850 by Thomas Cowperthwait and Co. in the Clerk's office of the Eastern District of Pennsylvania.'