Continental entry chart /
Aerospace Center (U.S.)
St. Louis : The Center,
1975-76.
Loran and consol radio navigation systems and military control zones indicated for east and west coasts of the U.S.
Relief shown by spot heights.
CEC-1 (East Coast) -- CEC-2 (West Coast) -- CEC-3 (Gulf Coast).
Aeronautical charts
Hyperbolic navigation