Deming, Slovinac, Joan, Patricia (Agosto de 2013). «Revised SCA HAER July 2013.». Shuttle Carrier Aircraft Historical American Engineering Record(en inglés). Página número 7, nombres de las tripulaciones asignadas.
JSC Oral History Project 1997 - 2020 (3 de junio de 2004). «Joe H. Engle Oral History». historycollection.jsc.nasa.gov(en inglés). "I was very, very pushed to find any difference between Enterprise and the two orbital vehicles, Columbia and Discovery, other than the fact that Enterprise was much lighter weight and, therefore, performance-wise you had to fly a steeper profile and the air speed bled off quicker in the approach and landing.". Consultado el 5 de octubre de 2020.