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https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/429660

Electric Helical Aerostat Driven in the Air by Albert and Gaston Tissandier. Original from Library of Congress. Digitally enhanced by rawpixel.

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Electric Helical Aerostat Driven in the Air by Albert and Gaston Tissandier. Original from Library of Congress. Digitally enhanced by rawpixel.

More