President Thomas Jefferson worked on designing his estate, Monticello, throughout much of his adult life, drawing heavily on classical architecture as well as the French architecture he became acquainted with during his time in Paris in the 1780s. This website presents an interactive map of Monticello, at its height a 5,000 acre plantation—its buildings, fields, orchards, and slave quarters—providing a window into Jefferson's domestic life.

Visitors can click on one of more than 25 locations on the Plantation, and see a short explanation of that place's function, as well as a small selection of current and historical photographs and documents pertaining to that location, including some of Jefferson's original building plans. Visitors can then virtually move inside Monticello itself through a 3-D tour of Jefferson's home, accompanied by text highlighting the social function of each room.

Also offered are virtual tours of the house, highlighting domestic life at Monticello and Jefferson's relationship with farming and gardening. Each of these tours is accompanied by a useful video introducing these topics and providing other background information about Jefferson's life and work.

These 12,000 items (72,000 digital images) allow the visitor to explore James Madison's life, the Revolution, or the Early Republic. Materials include his father's letters, Madison's correspondence, personal notes, drafts of letters and legislation, and legal and financial documents. Material covers the period from 1723 to 1836.

Page images of correspondence can be browsed by title, name, or correspondence series or they can be searched by keyword or phrase appearing in the bibliographic records (descriptive information) of the collection. Additionally, the full text of correspondence for which transcriptions are available can also be searched by keyword or phrase. A timeline covers the period from 1751 to 1836 and is useful for placing the events of Madison's life in historical context. Three essays are available, including one on Madison's life and papers and one on Madison at the Federal Constitutional Convention.

This wealth of historical materials, in a variety of formats, addresses Abraham Lincoln's years in Illinois (1831–1860) and Illinois history during the same period. The website provides more than 2,300 transcriptions of documents, including correspondence, speeches, treaties, and other official papers. In addition, there are 295 images of Lincoln, his family, friends, associates, and contemporaries, as well as Illinois towns, homes, and businesses, and 63 recordings of songs.

Materials are organized into eight thematic sections: African American Experience and American Racial Attitudes; Economic Development and Labor; Frontier Settlement; Law and Society; Native American Relations; Politics; Religion and Culture; and Women's Experience and Gender Roles. Each theme includes a background essay, relevant documents and images, video discussions by prominent historians, and narrated slide shows. "Lincoln's Biography" divides his life into eight segments with a summary and biographical text by scholars, as well as a bibliography.

This website features approximately 20,000 documents relating to President Abraham Lincoln's life and career. All of the materials are available as page images and about half have been transcribed. Resources include correspondence, reports, pamphlets, and newspaper clippings. While the documents date from 1833 to 1897, most material was written between 1850 and 1865, including drafts of the Emancipation Proclamation and Lincoln's second inaugural address. A chronological index offers names of correspondents and document titles.

Special presentations on the Emancipation Proclamation and the Lincoln assassination provide introductions, timelines, and 24 images of related documents and engravings. Additional resources include 16 photographs of the Lincolns and key political and military figures of Lincoln's presidency. This is an excellent resource for researching Lincoln's presidency and American politics prior to and during the Civil War.