78
Rebecca Hackler, «Interview with Bretton Alexander,» NASA Oral History Project, March 18, 2013.
79
Rebecca Hackler, «Interview with Michael C. Wholley,» NASA Oral History Project, March 18, 2013.
80
Rebecca Wright, «Interview with William Gerstenmaier,» NASA Oral History Project, June 12, 2013.
81
Rebecca Wright, «Interview with Michael Griffin,» NASA Oral History Project, January 12, 2013.
82
«Commercial Orbital Transportation Services: A New Era in Spaceflight,» NASA, SP-2014–617, June 2, 2014.
83
Hackler, «Interview with Michael C. Wholley».
84
Rebecca Hackler, «Sumara M. Thompson-King, Courtney B. Graham, and Karen M. Reilly,» NASA Oral History Project, March 19, 2013.
85
Alexander MacDonald, The Long Space Age: The Economic Origins of Space Exploration from Colonial America to the Cold War (New Haven, CT: Yale University Press, 2017), 133.
