File:Willy Ley, Paul Ehmayr.jpg

4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Willy Ley (with Paul Ehmayr) holding the Repulsor I rocket after its second flight

BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Paul Ehmayr (holding an improved version of the "Achsenstaber"), Klaus Riedel and