No.IV. Map and profile of the route from construction of a ship canal from the Atlantic to the Pacific oceans
1866|American Atlantic and Pacific Ship Canal Company
Carte D'Etude Pour Le Trace Et Le Profil De Canal De Nicaragua
1858|Gamond, Thome1:300 000
Karte des Isthmus von Nicaragua und Panamá in Mittel-America mit den verschiedenen Canal-Projecten zur Verbindung des Atlantischen u. Stillen Oceans nach J. Baily und den besten Quellen
1851|zgst. von A. v. Bülow
A New Map of Central America
1857|Mitchell, Samuel Augustus1:3 800 000
Central America.
1851|Tallis, J. & F.1:3 801 600
Central America.
1851|Tallis, J. & F.1:3 801 600
Travels in Central America, being a journal of nearly three years' residence in the country, together with a sketch of the history of the republic, etc