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First flight engine, 1903

First flight engine, 1903.jpg 15-mm aircraft cannonThumbnailsA Possibility of Motorcycling in the Future 15-mm aircraft cannonThumbnailsA Possibility of Motorcycling in the Future 15-mm aircraft cannonThumbnailsA Possibility of Motorcycling in the Future 15-mm aircraft cannonThumbnailsA Possibility of Motorcycling in the Future

First flight engine, 1903