Vietnam Era US DOD Joint Operations Graphic (Air) Map of Pskov USSR Cold War

Description

A map that was issued in the 1968-1970 time frame by the US Department of Defense showing aeronautical features and approaches for the Pskov Oblast region of the USSR, near the disputed countries of Lithuania, Latvia and Estonia at that time.  I can only assume that this is a map that would have been used by the Air Force for strategic purposes
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A relic from the cold war, this would have been a very restricted map at that time, when the US was in a heated war with the NVA, who were backed by the USSR at that time.  These maps would certainly be used and studied by the crews of nuclear bombers or any spy planes at that time.
Measures 29 inches by 22 inches when unfolded.
H23