JF Ptak Science Books Quick Post
Normally I wouldn't qualify a dirigible as "flying", except here it works because this imagined dirigible can also function as a submarine, which is something I am pretty sure I've not seen before. It is a wonderful and wild idea, especially when coupled wit the other imagery, showing the same dirigible landing softly in a city street using its eight "feathery" propellers. As high-in-flight as this may seem, and as lovely as the idea of having that same aircraft be submersible, there is also the fabulous and monstrous flying wing (center), which may may grab top billing in this image of the future of air travel.
[Source: Popular Mechanics, volume 36, July, 1921.]
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