Starkiller: The Jedi Bendu Script Site has some lofty goals, including:

To pursue and find (photocopies of) early drafts and screenplays of the original trilogy (A New Hope, The Empire Strikes Back, Return of the Jedi) and the prequel trilogy (The Phantom Menace, Attack of the Clones, Revenge of the Sith)."

The site has collected some pretty interesting stuff...