This large and exceptionally detailed map is one of the most remarkable maps produced during the Philippine–American War. It presents the field of operations under Major General Elwell Otis from Lingayen and Casiguran Sound to the northern coast of Luzon. The map presents detail of the topography, rivers, and place names with a legend at right identifying finer details including churches, forts, trails, cable lines, thermal springs, caves, and much more. Outside of the title, the map is entirely in Spanish. Lithographed by Andrew Graham in Washington.

References: Phillips (Philippine Islands) #559.

Condition: B+

Issued folding with light toning along the fold lines and a few short splits at the fold junctions.