Relief shown by contours and land form lines. "Army Map Service, U. S. Army, Washington, D. C., 137741. 1944. 8-44." "Compiled from 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; Vertica Mosaic, prior to 1940; Oblique Photograph, prior to 1940." Includes coverage diagram.