- Author: R S Ryan, George C. Marshall Space Flight Center
- Language: English
- Year: 1996
- Author: David S Akens, George C. Marshall Space Flight Center
- Language: English
- Year: 1973
- Author: George C. Marshall Space Flight Center. Public Affairs Office
- Language: English
- Year: 1974
- Author: B J Funderburk, George C. Marshall Space Flight Center
- Language: English