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Another cover-rendering of the De Bothezat Helihop - this one from Popular Science, March 1940:http://cdn2.uk.mentalfloss.com/sites/mentalflossuk/files/styles/insert_main_wide_image_750/public/popsci14.png?itok=GRXlAVEEThis one maybe a bit more realistic than the gun-toting Mechanics and Handicraft one I posted above.
Another cover-rendering of the De Bothezat Helihop - this one from Popular Science, March 1940:
http://cdn2.uk.mentalfloss.com/sites/mentalflossuk/files/styles/insert_main_wide_image_750/public/popsci14.png?itok=GRXlAVEE
This one maybe a bit more realistic than the gun-toting Mechanics and Handicraft one I posted above.
