Zeppelin over North Pole, 1931

30 Mongolian möngö 1977

Mongolia

Air Mail. History of Airships

Montgolfier's Balloon 0.11$	Zeppelin over North Pole, 1931	Osoaviahim, Russian Arctic Cargo 0.11$	Machinery transport, Russian planned
Flying crane, French planned. 0.55$	Russia Polar Exploration Stamp and Sukhe Bator statue.	North, Russian Heavy Duty Cargo 0.27$	Aeron-340 Russian Planned