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Robert H. Goddard - Wikipedia
Dr. Robert H. Goddard, American Rocketry Pioneer - NASA
Robert Goddard | Biography and Facts | Britannica
Robert H. Goddard: American Rocket Pioneer | Smithsonian ...
Robert Goddard and the First Liquid-Propellant Rocket
Robert Goddard: American Father of Rocketry | Space
95 Years Ago: Goddard’s First Liquid-Fueled Rocket - NASA