Includes inset maps of "A map of the Atlantic Ocean showing the America & European ports and the routes of the ocean steamers" and "The Isthmus of Panama showing the routes of travel between Chagres & Panama."
On original map: "New York, published by J.H. Colton and Co., no. 172 William St., 1857."
In margin of reproduction: "Digitally enhanced and prepared by the U.S. Geological Survey. Reproduced from original map held in the collection of the Library of Congress, Geography and Map Division.
Available also through the Library of Congress web site as a raster image.
Also available via the American Geographical Society Library Digital Map Collection.
Facsim. Denver, Colo. : U.S. Geological Survey, [2003?]. 98 x 125 cm., on microfiches 119 x 137 cm. Digitally enhanced and prepared by the U.S. Geological Survey.