Find a Grave
http://www.findagrave.com/
Use the Seach by Name function.  This website has some basic biographical information, exact dates of birth and death, and most interestingly, photographs of the deceasesed's grave.  Don't forget to check for "more photos not showing"  after the tomb photographs.

Biography.com
http://www.biography.com/
Click on Biography Search on the left hand side of the screen.  The photographs sometimes load slowly, be patient.  This site has very basic, short biographies.

Student Resource Center
http://find.galegroup.com/srcx/start.do?userGroupName=poug29234&sc=SRC&finalAuth=true

Grolier Online
http://go-passport.grolier.com/splash

Who2
http://www.who2.com/

Los Muertos Bibliography Suggestions