General Map Showing tne Vicinity of the Route Proposed by Commander T.O. Selfridge U.S. Navy : for an Interoceanic Ship-Canal by way of the Atrato, Napipi and Doguado Rivers in the Canton of Choco, State of Cauca U.S. of Colombia Sheet No. 2 [Ar.J-T.7-C.3_159]
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