Charters of Freedom (National Archives) - Includes the Declaration of Independence, the Constitution, and the Bill of Rights

Constitution of the United States (from the National Archives) - Includes original document text with hyperlinked changes to the document that occurred over the years

Constitution of the United States (from Yale Law) Gives documentary history of the forming of the U.S. Constitution w/links to documents that contributed to the Constitution's formation

Federalist Papers (Thomas)

Foreign Relations of the United States - Selected Documents (Avalon Project)

Foreign Relations of the United States - Misc. (Department of State - Office of the Historian )

Historical Publications of the United States Commission on Civil Rights - through the University of Maryland Thurgood Marshall Law Library portal

National Archives (homepage)

Measuring America: The Decennial Censuses from 1790 to 2000 [pdf format]

Peoples Vote - 100 Milestone Documents from NARA - Most Influential Documents in U.S. History - The People’s Vote, co-sponsored by the National Archives and Records Administration, National History Day, and U.S. News & World Report, invited Americans of all ages and educational backgrounds to vote for 10 of 100 milestone documents drawn mainly from the holdings of the National Archives. The documents chronicle United States history from 1776 to 1965.

Primary Documents in American History (Library of Congress)

Public Papers of the Presidents 1992-2009 Some Bush years (2007 & 2008) currently missing

Words and Deeds in American History (Library of Congress)