These 274 sources focus on the work of the Continental Congress and the drafting and ratification of the Constitution, including manuscript annotations. The collection includes extracts of the journals of Congress, resolutions, proclamations, committee reports, and treaties. In addition, there are documents relating to the Constitutional Convention of 1787, extracts of proceedings of state assemblies and conventions relating to the ratification of the Constitution, several essays on the ratification of the Constitution, and early printed versions of the U.S. Constitution and the Declaration of Independence.

There are 253 titles dating from 1774 to 1788 relating to the Constitutional Congress and 21 dating from 1786 to 1789 relating to the Constitutional Convention. Two timelines cover the period 1764 to 1789 and an essay entitled "To Form a More Perfect Union" provides historical context for the documents through an overview of the main events of the era of the Revolution.

These published works, manuscripts, images, and motion picture footage address the formation of the movement to conserve and protect America's natural heritage. Materials include 62 books and pamphlets, 140 Federal statutes and Congressional resolutions, 34 additional legislative documents, and excerpts from the Congressional Globe and the Congressional Record. An additional 360 presidential proclamations, 170 prints and photographs, two historic manuscripts, and two motion pictures are available.

Materials include Alfred Bierstadt paintings, period travel literature, a photographic record of Yosemite, and Congressional acts regarding conservation and the establishment of national parks. An annotated chronology discusses events in the development of the conservation movement with links to pertinent documents and images.

This wealth of data presents National Election Studies surveys of the American electorate conducted in presidential and congressional election years from 1948 to 2006. Large files of raw data can be downloaded. In addition, The ANES Guide to Public Opinion and Electoral Behavior is available and is readily accessible.

Composed of more than 100 tables and graphs, the guide traces nine key variables in the makeup and opinions of the electorate. These include: social and religious characteristics; partisanship and evaluation of political parties; ideological self-identification; public opinion on public policy issues; support for the political system; political involvement and partisanship; evaluation of presidential candidates; evaluation of congressional candidates; and vote choice. This website also provides pilot studies on recent surveying issues, such as measuring exposure to television advertisements, and a 5,000-item bibliography.

This comprehensive set of Congressional documents covers the nation's founding through early Reconstruction. Materials are organized into four categories: Continental Congress and the Constitutional Convention; Statutes and Documents; Journals of Congress; and Debates of Congress. The site provides descriptions of 16 types of documents, including bills and resolutions, American State Papers, the U.S. Serial Set, Journals of the Continental Congress, the Congressional Globe, and the Congressional Record.

A presentation addresses the making of the Constitution that introduced an 1834 compilation of Congressional debates and proceedings and a timeline presents American history as seen in Congressional documents. Special attention is directed to Revolutionary diplomatic correspondence, Indian land cessions, the Louisiana Purchase, the Journal of the Congress of the Confederate States of America, 1861–1865, the impeachment of Andrew Johnson, and the electoral college.