From Citizendium, the Citizens' Compendium
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- Bilstein, Roger E. Testing Aircraft, Exploring Space: An Illustrated History of NACA and NASA. (2003) This is an update of Henry, Orders of Magnitude: A History of NACA and NASA, 1915-1990
- Heppenheimer, T. A. A Brief History of Flight: From Balloons to Mach 3 and beyond, (2001)
- Henry, John et al. Orders of Magnitude: A History of the NACA and NASA, 1915-1990 (1989) [online edition]