With more than 375 documents related to United States history from the colonial period to the present, this site provides important historical documents and speeches. "Essays" contains more than 35 writings on various aspects of United States history. "Biographies" offers more than 200 biographies of historical figures related to American history, ranging from 350 words to 2,000 words in length. "Presidents" contains documents pertaining to each United States president, including inaugurations and State of the Union addresses.

Documents and essays are hyperlinked to four editions of the booklet An Outline of American History (1954, 1963, 1990, and 1994), a publication distributed abroad by the United States Information Service, along with similar volumes on American economy, government, literature, and geography. The site provides basic primary sources for American history survey courses.

P. T. Barnum's American Museum burned down under mysterious circumstances in 1865 after nearly a quarter century of patronage. The original museum tried both to entertain and educate with exhibits on natural history, American history, and reform efforts along with attractions of a sensational nature. With the exception of African Americans, who were barred from entry until the Civil War, New Yorkers of diverse ethnic, gender, and class identities mingled in the museum's shared cultural space.

Visitors to this website can explore an interactive 3D recreation of the museum or an archive of images, documents, accounts, and essays on 16 original Barnum exhibits, including the Fejee mermaid; Joice Heth, a former slave advertised as George Washington's nursemaid; "Swedish Nightingale" Jenny Lind; John Brown; Jefferson Davis; the Lincoln assassination; the Civil War in New York; and phrenology. The website allows visitors to immerse themselves in the popular culture of Barnum's era.

This collection of approximately 152,000 documents written by or to George Washington is the largest set of original Washington documents in the world. It includes correspondence, letterbooks, diaries, journals, account books, military records, reports, and notes from 1741 through 1799. Although the site is searchable by keyword, many documents are available only as page images rather than as transcribed text and the handwriting can be difficult to read. Transcripts, however, do exist for all diary pages and for selected documents.

The site includes a timeline with links to relevant documents; essays on Washington's diaries, letterbooks, and career as a surveyor and mapmaker; and an essay entitled "Creating the American Nation."