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| | U.S. Repositories Listing - C - D |
 | | Correspondents include Henry H. Arnold, Arnold Berliner, Otto Blumenthal, Hans Bolza, Max Born, J.M. Burgers, Richard Courant, G. Gabrielli, the Guggenheim family, J. Hunsaker, T. Levi-Civita, Robert A. Millikan, Richard Von Mises, Ludwig Prandtl, and G. Taylor. |
 | | The collection includes photographs; aviation pins; model plane; US flag for Max Miller, the first air mail pilot; and photographs, first air mail letters for Benjamin Lipsner, superintendent of first Post Office Air Mail; and the hangar and compass rose built in 1919 for the Service. |
 | | Emile (1851-1929) and Henry Adler (1895-1970) Berliner were a father-son team of inventors and engineers who developed and tested helicopters to the first successful flight on February 23, 1924, at College Park. |
| www.nasm.si.edu /research/arch/arch_repos/GUIDE.PT2.html (6101 words) |
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