Librarians have evaluated various internet search results and identified these sites as having credible and authoritative information of possible interest to students conducting research in American History. It is not an exhaustive list but a great place to start!
The 1619 Project (New York Times Magazine)
Initiated in August 2019, the 400th Anniversary of the beginning of American slavery, this is an ongoing project that works towards reframing the history of slavery so that the long-lasting consequences are central to our national narrative.
https://www.nytimes.com/interactive/2019/08/14/magazine/1619-america-slavery.html
American Historical Association
The largest professional organization for historians.
www.historians.org
Avalon Project at Yale Law School - Primary Documents in Law, History and Diplomacy
A collection of primary sources documents dating back to 4000 BCE.
http://avalon.law.yale.edu/
Library of Congress
The largest library in the world, containing millions of books, recordings, photographs, newspapers, and more.
www.loc.gov
Library of Congress: American Memory
Primary source collections pertaining to American History.
http://memory.loc.gov/ammem/index.html
Chronicling America: Historic American Newspapers
From the Library of Congress, a searchable collection of digitized American Newspapers from roughly 1789-1963.
http://www.loc.gov/chroniclingamerica/
Schomburg Center for Research in Black Culture
From the New York Public Library, an organization aimed at preserving, protecting, and facilitating awareness and understanding of the Black experience through its collections.
www.nypl.org/research/sc
Inaugural Address of the Presidents of the United States
A collection of every inaugural address since George Washington.
https://www.bartleby.com/124/