Issue: First Non-stop Flight Moscow to Portland over North Pole (Soviet Union, USSR, 1938)

Sunday, April 10, 1938, First Non-stop Flight Moscow to Portland over North Pole

Sunday, April 10, 1938 Soviet Union, USSR will issue: Stamp "Portrait of Crew of ANT-25 and Flight Route" face value 10, Stamp "Portrait of Crew of ANT-25 and Flight Route" face value 20, Stamp "Portrait of Crew of ANT-25 and Flight Route" face value 40, Stamp "Portrait of Crew of ANT-25 and Flight Route" face value 50, Stamp "Portrait of Crew of ANT-25 and Flight Route" face value 10,