"STS-85". Spacefacts. Archived from the original on 20 May 2018. Retrieved 3 January 2018.
spaceflightnow.com
Harwood, William (19 January 2011). "Injured astronaut replaced on shuttle Discovery's crew". Spaceflight Now. Retrieved 16 September 2016. Jeff Ashby was replaced as the pilot of STS-85 in 1997 because of a family illness [...]