<sod>  == External Links ==
 * [http://www.skeptic.com/04.4.sagan-tribute.html In Memory of Carl Sagan]
 * [http://www.carlsagan.com/ Carl Sagan . Com]
 * [http://usenet.net.nz/apod/ap961226.html APOD: Carl Sagan]
 * [http://www.news.cornell.edu/general/Dec96/saganobit.ltb.html Cornell press release of Sagan's death]
 
 <eod> <sod> == External Links ==
 * [http://www.skeptic.com/04.4.sagan-tribute.html In Memory of Carl Sagan]
 * [http://www.carlsagan.com/ Carl Sagan . Com]
* [http://www.marijuana-uses.com/examples/Mr_X.htm Mr. X writing]
 * [http://usenet.net.nz/apod/ap961226.html APOD: Carl Sagan]
 * [http://www.news.cornell.edu/general/Dec96/saganobit.ltb.html Cornell press release of Sagan's death]
 
 <eod>