Oil installations highlighted in red. "Produced under the superintendence of Vice-Admiral Sir John Edgell, KBE CB, Hydrographer." "Compiled and drawn by Inter-Service Topographical Department." This map was originally held by the Department of Defence, and was acquired by the Laurier Military History Archive (LMH) from the Directorate of History and Heritage, Government of Canada, in the 1990s. Digitization and georeferencing of the map was performed at the University of Waterloo.