Other
Nuclear files.org: Julius Robert Oppenheimer
At this site from Nuclearfiles.org you can read a biography of J. Robert Oppenheimer and about his career as a scientist and his important involvement with the Manhattan Project and Atomic Energy Commission.
PBS
Pbs: J. Robert Oppenheimer 1904 1967
This site from PBS provides biographical information about J. Robert Oppenheimer, and his involvement with the atomic bomb.