This joint publication between the National Air and Space Museum and the American Institute of Aeronautics and Astronautics chronicles the evolution of the small gas turbine engine via a comprehensive study of a major aerospace industry. Drawing on in-depth interviews with pioneers, current project engineers and company managers, engineering papers published by the manufacturers, and the tremendous document and artifact collections at the National Air and Space Museum, the book captures and memorializes small engine development from its earliest stage. Richard A. Leyes II is the Curator for Aero Propulsion at the National Air and Space Museum, Smithsonian Institution. He has a B.A. in Economics from the University of Wisconsin and a M.S. in Industrial and Labor Relations from Cornell University. For NASM, Mr. Leyes has done aircraft engine research and writing, collecting and exhibitions. He also holds a private pilots license and a Federal Aviation Administration Airframe and Powerplant license. William A. Fleming is a graduate of Purdue University with a B.S. in Aeronautical Engineering. He was a pioneer and leader in jet engine research during the 1940s and 1950s at the National Advisory Committee (NACA) for Aeronautics Lewis Flight Propulsion Laboratory. He later directed development of the plan for the National Aeronautics and Space Administrations (NASA) Apollo manned lunar landing program and served in senior management positions at NASA Headquarters. Mr. Flemings publications include Future Aeronautics and Space OpportunitiesVolume 1 Space and approximately 30 NACA research reports. Following retirement from NASA, he spent 12 years as a management consultant. Contributor An important contributor to the book is A. Stuart Atkinson, who holds a B.S. in Mechanical Engineering from the University of Arkansas and an MBA from George Washington University. For more than 37 years, Mr. Atkinson held engineering positions in the Department of the Navy associated with aeronautical research and development, including senior managerial positions with the Naval Air Systems Command. Most of his career was in the field of aero propulsion, during which time he developed the technical and program requirements for Navy engines and directed the development of many of the small turbine engines sponsored by the Navy.