The National Security Archive at George Washington University is dedicated to using the Freedom of Information Act to obtain and then publish top-secret government documents related to national security issues. Here the Archive offers a 20-year retrospective on the Iran-Contra Affair, complete with a selection of digitized documents.
PBS's American Experience documentary series offers a well-conceived companion website for its episode, "The Presidents: Reagan."
The Reagan Presidential Library and Foundation is the official repository for Reagan's papers and records. The website offers a nice celebration of Reagan's life, along with links to some digitized primary source documents and information on accessing the full collection.
Upon President Reagan's death from Alzheimer's Disease in 2004, CNN built this retrospective website offering coverage of Reagan's memorial and analysis of his legacy from a variety of political perspectives.