Encore: John Van Valkenburg and His Mysterious Wonderplane
In 1917 John Van Valkenburg, a Salt Lake City inventor, announced that he had conquered the laws of gravity and had an aircraft that could fly from Salt Lake City to the Pacific Coast and back in a night. It was reported that he had taken it to Washington and then turned it over to the US government for use in the War effort. Then, suddenly, Van Valkenburg found himself on trial.