This map shows Central America and surrounding areas including the southern United States. Colors were used to outline territories in the United States, Mexico and the Mexican states, and individual countries in South America. Some cities, bodies of water and geographic features are marked (with relief shown by hachures). There is a key to the "Classification of Places" on the right side of the map showing the symbolic representations of city populations. There is also a pictorial elevation chart at the bottom of the map showing the mountains of the region.

Copy of transcript for a letter from Henry Clay to Joel R. Poinsett, Envoy Extraordinary and Minister Plenipotentiary U.S Mexico concerning relations and trade agreements between Mexico, the United States of America, Great Britain, and Colombia.