A digital archive of the Public Papers of the Presidents of the United States from Hoover to Bush (1929 to present); see also IC Library stacks at: J80 .A283. The site also includes: inaugural addresses, radio addresses, fireside chats, debates, convention speeches, and party platforms.
Congressional Research Service (CRS) provides background reports to Congress yet they were not distributed to government document collections. Citizens had to write their Congressional representatives to obtain copies. The Open CRS site has indexed and posted copies of these valuable documents.