Reports of explorations and surveys for the location of a ship-canal between the Atlantic and Pacific oceans, through Nicaragua, 1872-'73 : under the direction of the Hon. George M. Robeson, Secretary of the Navy
This is a United States Navy Department government report from 1874, printed in Washington by the Government Printing Office, documenting surveys for a ship canal through Nicaragua between the Atlantic and Pacific. The two pictures are plain cross-section engineering diagrams of ground profiles, labelled with letters A, B, C and L, drawn in hatched line work for surveyors and engineers.
