30th August 1944. Based on AMS S401 First edition NC51-3. Additional information by Allied Geographical Section; Boundaries indicate areas dealt with in the text Ref Sec VII
Sources of information U.S. Coast and Geodetic Survey, U.S. Army Engineers, Bureau of Public Works, Bureau of Lands, Bureau of Foresty and other Philippine Government Bureaus, provincial and municipal officials; Bureau Coast and Geodetic Survey…