The website offers learning modules on major topics in American history, podcasts from noted historians discussing their work, online exhibitions of primary source documents, and information about the institute's programs.
The collection contains more than 60,000 documents on deposit at the New-York Historical Society detailing the political and social history of the United States.
The collection's holdings include manuscript letters, diaries, maps, photographs, printed books and pamphlets, ranging from 1493 through modern times.
Letters written by George Washington, Thomas Jefferson, Abraham Lincoln, Frederick Douglass et al. vividly record the issues and events of their day.
The writings of such notable women as Lucy Knox, Mercy Otis Warren, and Catharine Macaulay discuss a variety of military, political, and social issues.