1922. Ceylon. Survey Department. Date from pencil mark on cover and map code: "29-4-22"--lower right.; Relief shown by hachures and spot heights.; Includes distance charts.; Insets... Survey Dept (Ceylon).
1995. Jean-Claude M. Thomas and Jerry L. Mullins. Projection: Lambert Conformal Conic Projection - Standard Parallels -76º40' and -79º20'; Series: USGS Satellite Image Maps. United States Geological Survey.
1985. Self, S. (Stephen), Smit, J. H. (Jacobus Hendrik), 1932-, and Stump, Edmund. Projection: Polar Stereographic Projection: Standard Parallels -80º14'; Series: USGS 1:250,000 Geologic Reconnaissance Series. United States Geological Survey.