Palawan, Philippines 1918

Relief shown by contours, hachures, spot heights, and landform drawings. Depths shown by gradient tints, soundings, and isolines ; "Soundings in fathoms at mean lower low water." ; "Heights in feet above high water for lighthouses; above mean sea level for other features." ; Includes text, seal, and tables ; Oriented with north toward upper right ; "No. 4317" -- upper left margin ; "18-4/29" -- lower left margin ; "Published at Washington, D.C. April 1918 ..." ; "Surveys to 1917."Color1:100,00