SECRETARY'S REPORT 115 



Olmsted, John B., Miami, Fla. : The original wind-tunnel model of an am- 

 phibious twin-pusher monoplane developed by his father, Charles M. Olmsted, 

 1909-1912 (N. A. M. 880). 



Parker, Wm. D., Bartlesville, Okla.: An Elbridge 3-cylinder airplane engine 

 used by the donor during some of his early flights, 1910-12; and a Lawrance 

 2-cylinder-opposed aircraft engine developed for installation in the "Penguin" 

 clipped-wing training airplanes of World War I (N. A. M. 907). 



Pfister, Mrs. Arthur, Aspen, Colo. : A Bell P-39 Airacobra airplane, a fighter 

 type developed for use in World War II, this example having been piloted 

 by the donor (nee Betty Haas) in postwar air races (N. A. M. 876). 



Portz, Henry G., Garden Grove, Calif. : Scale model, 1 : 16, of the Turner-Laird 

 special racer piloted by Roscoe Turner when he won the 1939 Thompson Trophy 

 Race at an average speed of 282.53 m. p. h., becoming the only pilot to win 

 this famous trophy three times. (N. A. M. 905) . 



Post Office Department, Washington, D. C. : A mail bag used in the Postal 

 Aviation Service on the first continuous scheduled public-service airmail 

 route in the world, New York-Philadelphia-Washington, 1918 (N. A. M. 889). 

 An airplane propeller, mahogany, from one of the airmail planes operated 

 by the Postal Aviation Service over the transcontinental mail routes about 

 1925, used with a Liberty engine (N. A. M. 908). 



Ricker, Bernard, Washington, D. C. : A mail bag and post card dropped from 

 the German airship Graf Zeppelin when it circled over Washington after 

 making its first transatlantic flight from Germany to Lakehurst, N. J., October 

 15, 1928. The donor, then 13 years old, caught this mail bag and took it to 

 the Post Office where its contents were forwarded (N. A. M. 912). 



Stout, Wm. B., Phoenix, Ariz. : A group of five early and experimental aircraft 

 models which the donor collected or constructed, illustrating elementary heli- 

 copters of the late nineteenth century, and gliders constructed from descrip- 

 tions by Octave Chanute (N. A. M. 878). 



Topping, William, Akron, Ohio : Scale models, 1 : 48, of two guided missiles, 

 the Chance Vought "Regulus" and the Martin B-61 "Matador," which are in 

 current production (N. A. M. 901). 



United Aircraft Corp., Pratt & Whitney Aircraft Division, Hartford, Conn, 

 (with assistance of Harvey Lippincott) : A Bendix fuel injection unit of the 

 type used with the Wasp Major R^360 engines (N. A. M. 882). The original 

 example of the J-57 twin-spool turbojet engine, a type selected to power 

 several supersonic fighters of the U. S. Air Force and Navy and recently 

 developed tankers and bombers, including the Boeing 707 and Douglas DC-8. 

 The designer of this engine, Leonard S. Hobbs, was awarded the Robert J. 

 Collier Trophy for 1952 (N. A. M. 885). An R-2000 2SD13G aircraft engine, 

 the Pratt & Whitney Co.'s one-hundredth experimental engine which served 

 as a basis for testing many improvements in design. This type installed in 

 DC-4 airplanes made aircraft history as the principal powerplant of the 

 famous Berlin airlift (N. A. M. 890). A full-sized sectionalized turbosuper- 

 charger of the type used in the Boeing B-17 superfortress bombers during 

 World War II to enable the engines to operate efficiently at high altitudes. 

 For development of the turbosupercharger Dr. Sanford A. Moss, of the General 

 Electric Co., was awarded the Robert J. Collier Trophy for 1940 (N. A. M. 

 891). Sikorsky Aircraft Division, Bridgeport, Conn.: Scale models 1:48, 

 of the H-5 and H-19 helicopters, in current service (N. A. M. 897). 



United Air Lines, Chicago, 111.: Uniform of the type worn by the first stew- 

 ardesses of this airline which was the first to employ them, 1930 (N. A. M. 879). 



