AMS 1. Alternate title: Catbalogan. Polyconic projection. Projection ticks approximate. In upper left margin: Philippine city plans 1:5,000. Relief shown by form lines. Compiled from USC&GS Topographic Field Survey Sheets, 1:20,000, P738B, 1910; USC&GS Chart No. 4420, 1:35,000, 1936 (Special printing 44-5/1); Katbalogan 1:2,000, 1902; Map of the Municipality of Catbalogan, 1:4,000, Director of Public Works, 1928; Vertical Mosaic, prior to 1940; Oblique Photograph, prior to 1940. Polyconic projection. Relief shown by form lines and bathymetry.