U.S. Centennial of Flight Commission home page
Oberth portrait

The foremost authority on rocketry outside the United States was Dr. Hermann Oberth, a Hungarian-born German. In 1923, he published a book about rocket travel into outer space. Because of his important writings, many small rocket societies sprang up around the world. In the spring of 1930, a young Wernher von Braun assisted Oberth in his early experiments in testing a liquid-fueled rocket with about 15 pounds of thrust.

Credits - NASA