It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
As far as I can tell, these two reports - authored or coauthored by celebrity-scientist Carl Sagan - have never been publicly released until now. My Freedom of Information Act request for these reports was forwarded to NASA's Jet Propulsion Laboratory, which released them to me on 4 August 2005 (FOIA request SJ-2005-022).