Each presidential site must be viewed independently. This jump-site will yield images, sound files, video files, and text of great educational importance. The Library of Congress is a massive web resource which contains hundreds of thousands of images, sound and video files, and transcripts of speeches, laws, court hearings, etc. The American Memory Collection is especially recommended as a source of multimedia material on American history. This site will provide great resources for the classroom.
All information is public domain, and can be reproduced.
The page is constantly updated. This is a great resource for the Supreme Court enthusiast, or for a class dealing with the Supreme Court. There are streaming audio clips of oral arguments before the Court. In addition, there are transcripts of legal briefs and opinions of the Court. There is also a link to the Findlaw homepage, which has all Supreme Court opinions transcribed since 1891.