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The latest in plows. Washington, D.C., July 14. R.B. Gray, Chief of th...
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Solar-powered Gossamer Penguin in flight
(July 25, 1979) Gossamer Penguin in flight above Rogers Dry Lakebed at Edwards, California, showing the solar panel perpendicular to the wing and facing the sun. The first flight of a solar-powered aircraft too... More