15th September 1944. This map is for the purpose of identification of road numbers only. For classification details and descriptions see Sectional Maps; Based on Philippine Islands, Northern Luzon, First edition AMS 1
15th September 1944. Channel across the bar corrected from information received from Bureau of Public Works and local pilots in Mar. 1938; Authorities: surveys to 1936. Soundings across the bar by Bureau of Public Works in Mar. 1938