Time
Time: The 10 Most Notorious Presidential Pardons
Time Magazine presents an enlightening special report on the 10 most notorious presidential pardons in U.S. history. Included are Jimmy Hoffa, Richard Nixon, Patty Hearst, George Steinbrenner, and more.
PBS
Pbs: The Iran Contra Affair
This site from PBS provides a good summary of the Iran-Contra Affair. This is a summary of how this event is covered in the PBS film " The American Experience".