Presidential portraits & brief highlights of each administration
Essays on each president & his administration
From the Library of Congress, these guides compile digital materials that are available throughout the Library’s Web site. In addition, each resource guide provides links to external Web sites & a bibliography containing selected works for both a general audience & younger readers.
Presidential documents, texts of speeches, and remarks
From the U.S. Senate, this annotated version of the Constitution provides the original text (left-hand column) with commentary about the meaning of the original text & how it has changed since 1789 (right-hand column). Free resource.
Official versions from the National Archives of the Declaration of Independence, the Constitution of the United States, & the Bill of Rights. View & download images of the original documents or read transcripts. Free resource.
Choose "US Legal" from the left sidebar & select "Federal Statutes, Codes & Regulations" or "State Statutes, Codes & Regulations." Coverage of public laws begins with 1988; state codes are for the latest complete session.
Encyclopedia of the American Presidency by 
Guide to the Presidency and the Executive Branch by Current lists of members, legislative activities, most-viewed bills, etc. Free resource.
The United States Congress by Formerly "Thomas" from the Library of Congress. Now part of Congress.gov. Track legislation, view sessions live, read the Congressional Record & committee reports, etc., back to the 101st Congress, 1989-90. CR app available for download. Free resource.
From 1789 to the present, full text of laws as passed by Congress & signed by the Presidents.
Search & browse this retrospective collection of largely Congressional, but also Executive, documents of the first fourteen U.S. Congresses. The nearly 6,300 publications are a rich source of primary material on wide-ranging aspects of early American history. CU subscription.
Reports, documents and journals of the U.S. Senate and House of Representatives.
Beginning with 1774, this site brings together online the records & acts of Congress from the Continental Congress & Constitutional Convention through the 43rd Congress, including the first three volumes of the Congressional Record, 1873-75. Free resource.