This original nautical chart of the Atlantic, Gulf of Mexico and Pacific Coast, dated 1871, is from the U.S. Coast Survey collection. The inset on the upper left side is of the Pacific Coast. The inset along the bottom left shows the longitude determinations between the Atlantic and Pacific Oceans. These charts were intended for navigational purposes by sea captains and included information relative to tides, soundings, lighthouses, sailing directions with noted danger areas and other pertinent data. This chart is tinted and in good condition with some minor foxing on the fold lines.