In 1930s Russian army was … by the idea of creating huge planes. At that times they were proposed to have as much propellers as possible to help carrying those huge flying fortresses into the air, jet propulsion has not been implemented at those times yet.
Not much photos were saved since that times, because of the high secrecy levels of such projects and because a lot of time passed already. Still on the photo below you can see one of such planes - a heavy bomber K-7.
pumpuros pie juuras bija arii restoraans cabourg.. super dizains tiem laikiem, ar fantastisku izgaismojumu. zaales uzbuuve gan nebija paaraak veiksmiiga variete showiem, bet tomeer pasaakumi gaaja uz urraaaaaa
atradu jau tikai izdemoleetas eekas bildes.. jaaparokas maajaas pa vecajaam bildeem, mosh atradiishu arii iz to laiku variete bildes.
According to this top secret Russian document, which was unclassified recently Soviet military engineers were planning complete removal of North American continent.
Translation of the document:
“KGB, Soviet Union. Top Secret. Moscow. February 26, 1973
This is a scheme of a assumed changes in geographical structure of Earth continents which may happen as a result of correction of gravity field of the Earth by the A-241/BIS device