Trinidad and Tobago.
United States.Army.Corps of Engineers.
Great Britain.Ordnance Survey.
Washington, D.C. : Engineer reproduction plant,
1940.
Relief shown by contours and spot heights.
In upper margin: War Department, Corps of Engineers, U. S. Army. Tactical map ...
"Grid zone St. Thomas."
"From British ordnance survey maps, 1920-25."
"Tobago N1110-W6035/10x15" --Lower right margin.
Sheet 1 of a 9 sheet set.