This well-designed site presents the Nebraska edition of the Lewis and Clark journals, edited by Gary E. Moulton. The site provides the complete text of all the journals from the 1803–1806 expedition, as well as introductions, prefaces, and sources. The material is searchable by keyword and phrase.

There are 29 scholarly essays about the expedition. An image gallery offers 124 images of pages from the journals, 95 images of people and places, and 50 images of plants and animals encountered on the expedition. The maps section includes 12 explanatory maps and nine images of maps from the journals. Additionally, there are 27 audio excerpts of journal readings and eight video interviews with the editor of the project. The website stands as an outstanding resource for researching the history of the Lewis and Clark expedition.

By the time Thomas Jefferson became the third President of the United States in 1801, interest in exploring the West had begun to shape U.S. policy. This chronological narrative traces Jefferson's life, participation in politics, and accumulation of scientific geographical knowledge from 1735 to 1804. There are four main sections: "The Jeffersons and Their Frontier Virginia Neighborhood," "From Colony to Commonwealth," "Science and Statecraft at Home and Abroad," and "Public Servant to the Early Republic."

This narrative is accompanied by an archive of 169 letters, statues, books, treaties, maps, and journals providing primary source insight into Jefferson's thoughts about the West and the Lewis and Clark expedition in particular. Three interactive maps from the 1700s, overlaid with historical data about cities, private dwellings, natural features, courthouses, and waterways, provide important insight into the geographic and social environment at the time.

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.