Steel engraving with original outline colouring. Overall size in off-white mount : 55cms. x 41cms. Image size : 422mm.x 265mm. Unobtrusive folds. Archival repairs on verso : five to the right edge, two to the bottom (one 3cms into map, not visible from front) and one at edge of old fold below the word Mexico in Gulf of Mexico. Darkening to right border edge else good condition and nicer than this sounds. Key showing federal, non-slaveholding states, Border, Slaveholding, Confederate, Indian Reservation.