https://www.space.com/2490-nasa-shuttle-managers-discuss-sts-121-launch-plan.html
NASA Shuttle Managers Discuss STS-121 Launch Plan | Space
Jun 16, 2006 - NASA mission managers, and engineers began a two-day meeting at the Kennedy Space Center (KSC) Friday to give the space shuttle Discovery a last once-over in...
nasa shuttlests 121launch planmanagersdiscuss
https://www.universetoday.com/articles/astronauts-announced-for-sts-121
Astronauts Announced for STS-121 - Universe Today
sts 121astronautsannounceduniversetoday
https://spaceref.com/status-report/esa-tv-coverage-of-the-sts-121-shuttle-mission-15-17-july-2006/
ESA-TV coverage of the STS-121 Shuttle Mission - 15-17 July 2006 - SpaceRef
Jul 15, 2006 - Space news and reference site.