American newspapers from 1690 to 1876. Search by presidential era or periods in American history.
Searchable content of American historic newspapers from 1777-1963, as well as U.S. Newspaper Directory for finding information about American newspapers published between 1690-current.
Full text coverage of the newspaper from 1785-1985.
Letters of marque and letters regarding enemy aliens; passenger lists of vessels; correspondence regarding passports; agreements for the exchange of prisoners of war; miscellaneous correspondence.

American Memory Project at the Library of Congress: Primary source materials organized by subject/topic from the collections of the Library of Congress
A Century of Lawmaking for a New Nation: Provides Statutes, Acts and Congressional Discussions from 1774-1875.