- SAVE $2.90$20.30$23.20Insiders Reveal Secret Space Programs & Extraterrestrial AlliancesAmazon
- $24.95US Army Insider Missions 2: Underground Cities, Giants & Spaceports (Secret Space Programs)Amazon
- $6.92Challenger Revealed : An Insider's Account of How the Reagan Administration Caused the Greatest Tragedy of the Space Age by Richard C. CookBetter World Books