A map from 1914 of the completed canal across the Isthmus of Panama. The map shows the Caribbean Sea entrance at Colon, the route of the canal through Gutan Lake and lock system, the Pacific entrance at the city of Panama, the Canal Zone boundary with the Republic of Panama, the continental divide, railroads, cities and towns, mountains, islands, and coastal features. An inset map shows the entire isthmus and country of Panama, from the border with Nicaragua to the border with Columbia. A grid-key at the bottom of the map references the locations of cities, towns, locks, stations, lakes, rivers, and islands in the Panama Canal Zone.