Here are the latest additions to The Best Sites For Learning About The Presidential Inauguration (Edublogs seems to have fixed access problems pretty quickly, so you should be able to get to the whole list itself now):
USA Today has an excellent interactive map of the parade route.
The Guardian, a UK paper, has a good interactive, and accessible, schedule of Inauguration activities.
The Tuskegee Airmen, the first African-American fighter pilots, are going to be honored at the Inauguration. I have several links to accessible activities about them on the list already, and have just added a good online video from the New York Times.