From the University of California, Santa Barbara

“The American Presidency Project is the only online resource that has consolidated, coded, and organized into a single searchable database:
• The Messages and Papers of the Presidents: Washington – Taft (1789-1913)
• The Public Papers of the Presidents: Hoover to G.W. Bush (1929-2007) & Obama (2011-Book I)
• The Weekly Compilation of Presidential Documents: Carter – G.W. Bush (1977-2009)
• The Daily Compilation of Presidential Documents: Obama (2009-2015)
• Our archives also contain thousands of other documents such as party platforms, candidates’ remarks, Statements of Administration Policy, documents released by the Office of the Press Secretary, and election debates”

Go to: http://www.presidency.ucsb.edu/index.php

Source

The American Presidency Project was established in 1999 as a collaboration between John T. Woolley & Gerhard Peters at the University of California, Santa Barbara. The archives contain 111,366 documents related to the study of the Presidency.