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The Lee Harvey Oswald Research Page
This very informative site about Lee Harvey Oswald is easy to navigate. Parnell subscribes to the Lone Assassin Theory but tries to give a balanced treatment in the "articles" link, which offers reviews of books on both sides of this...
US National Archives
Nara: Jfk Assassination Records Collection
This National Archives and Records Administration government website that provides an extensive collection of quality documents and information regarding the assassination of President John F. Kennedy.