George Washington Papers held by the Library of Congress. 65,000 documents available online in two formats: digital images of the originals and typed transcripts.
John Adams's diaries, autobiography, and correspondence with his wife Abigail provided in two formats: digital images and typed transcripts.
Transcript of Washington's Farewell Address, 1796.
Transcripts of the Alien and Sedition Acts of 1798, and the Kentucky and Virginia Resolutions denouncing them.
Alexander Hamilton's First Report on the Public Credit in which he outlines his plan to fully refund the national debt, 1790.