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1915 Profile of Panama Canal. Bird's Eye View … Separate Map Profile of Panama Canal. Bird's Eye View … |
1922 Panama Canal. World Atlas The Panama Canal. Effect on ocean routes … |
1866 No.VII. Map and profile of the route for … Survey Book No.VII. Map and profile of the route for … |
1866 No.XI. General sketch of the survey for … Survey Book No.XI. General sketch of the survey for … |
1866 No.XII. Interoceanic ship canal via Atra … Survey Book No.XII. Interoceanic ship canal via Atra … |
1866 No.XIII. Isthmus of Darien from 77(degre … Survey Book No.XIII. Isthmus of Darien from 77(degre … |