The American Presidency Project has made thousands of documents available through its searchable database. Speeches, press conference transcripts, executive orders, signing statements, and public papers for every American president are among the documents linked to this site.
An extensive collection of Kennedy materials—papers, speeches, and press releases—has been made available electronically by the John F. Presidential Kennedy Library and Museum. The White House Diary is also available under a separate tab.
The Lyndon Baines Johnson Library and Museum has posted several speeches and presidential messages online.