http://worldofbiography.com/9131%2DRobert%20Goddard/specialfeatures.htm
Dr. Goddard is credited as the first American to publish the theory
underlying rocket propulsion and space flight. He did this in his best
known publication A Method of Reaching Extreme Altitudes, which was
published by the Smithsonian Institute in 1919 and which laid the
foundation for the present day development of jet propulsion and
rockets.
www.worldofbiography.com