"Kitty O'Brien Joyner". NASA CRGIS. NASA. February 3, 2016. Archived from the original on September 30, 2015. Retrieved April 16, 2019. This article incorporates text from this source, which is in the public domain.
"Kitty O'Brien Joyner". NASA CRGIS. NASA. February 3, 2016. Archived from the original on September 30, 2015. Retrieved April 16, 2019. This article incorporates text from this source, which is in the public domain.