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
16th December 1943. Based on standard traverse by A R Miller LS, MIS, 1938-30. Topographical information from 0 km to 32 km from field notes and from 32 km to Maprik from air photography by Australasian petroleum Co.