American-Israeli Cooperative Enterprise
Jewish Virtual Library: Reinhard Heydrich
A detailed biography of "the Hangman" of World War II Nazi Germany.
The History Place
The History Place: Holocaust: Reinhard Heydrich
This site from The History Place provides a lengthy biography of the principal planner of the Final Solution in Nazi Germany, Reinhard Heydrich. The information is somewhat in-depth and worth checking out on the subject.