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CG-20 World Aeronautical Chart
Aeronautical map of the central United States, or region "CG-20", showing cities, roads, and topographical features, as well as aeronautical and radio frequency symbols for flight navigation. Various pencil notes are written on the map's margins. Scale 1:1,000,000
Date:
March 2, 1972
Creator:
United States. Department of Commerce.
System:
The Portal to Texas History