F. Stamer and A. Lippisch, 3 volumes. (1) Gleitflug und Gleitflugzeuge, I: Konstruktion und praktische Fluversuche, 1928. 61pp, 75 text illus, 1 folding plate. (2) Gleitflug und Gleitflugzeuge,II: Bauanweisungen und Bauzeichnungen, 1928; 9pp, 8 text illus and five folding plates of plans, all folding, four of them large. (3) Handbuch fuer den Jungsegelflieger, I: Ausbildung, Maschinen, Wekzeuge Instrumente, 72pp, 84 text illus. All published by C.J.E. Volkmann, Berlin/CHarlottenburg, 1928. Part of the series, Flugzeugbau und Luftfahrt, heft 11-13. 9x6, bound in unfiorm yellow heavy wrappers. GOOD+ copies $125/all
"Alexander Martin Lippisch (November 2, 1894 – February 11, 1976) was a German aeronautical engineer, a pioneer of aerodynamics who made important contributions to the understanding of flying wings, delta wings and the ground effect, and also worked in the U.S. His most famous designs are the Messerschmitt Me 163 rocket-powered interceptor 174 and the strange-looking Aerodyne..."--Wiki
"Friedrich "Fritz" Stamer, German pilot of first rocket-boosted glider. Stamer was the first soaring-teacher at the Wasserkuppe, flew the first rocket airplane and constructed a wide range of gliders. During World War II he was an instructor for military transport glider pilots.--Encyclopedia Astronautica.