This exceptionally detailed map was produced during the Philippine–American War. It presents the field of operations under Major General Elwell Otis from the Gulf of Lingayen south to Manilla Bay. This was an active area in the war and delineates the lines of operation for Generals Lawton, MacArthur Jr. and Wheaton along with a railroad (highlighted in color) extending from Dagunan south to Manilla. The map further depicts the region's rugged topography, rivers, cities and smaller settlements. Compiled by William Sibert and lithographed by Andrew Graham in Washington.

References: Phillips (Philippine Islands) #507.

Condition: B+

Issued folding on a bright sheet with some light toning along the left vertical fold. One tiny split at a fold junction has been closed on verso with archival tape.