http://www.myspace.com/annachristianwaters (my page)
http://www.myspace.com/reuniteanna (page run by SherlockJr, chief sleuther in Anna's case)

Five-year-old Anna Waters disappeared from outside her home near Half Moon Bay, California on January 16, 1973. There have been many interesting developments in her case, which you can read about in her thread at Websleuths:
http://www.websleuths.com/forums/forumdisplay.php?f=104

Here is Anna's official site:
http://www.searchingforanna.com/