National Archives Foundation: DocsTeach: Primary Sources: Explore Documents: Revolution & the New Nation (1754--1820s) (collection of primary source documents, artwork, maps, etc.)
National Archives: Milestone Documents (slide timeline to document of choice, click document name, then click Learn More to see primary source document & transcription)
National Archives Catalog: Lee's Proposition for Independence (scan of original and transcription)
National Archives: America's Founding Documents: Declaration of Independence: A Transcription (original Declaration thumbnail to right of transcript; click on magnifying glass icon to enlarge)
Library of Congress: Chronicling America: The Pennsylvania Gazette (Philadelphia, PA), July 10, 1776 (Click thumbnail image to enlarge.)
Library of Congress: Chronicling America: The Boston Gazette (Boston, MA), July 22, 1776 (Click thumbnail image to enlarge.)
National Archives: Milestone Documents: Northwest Ordinance (1787) (original printed copy and transcription)
Library of Congress: The Records of the Federal Convention of 1787, Also Known as Farrand's Records (single provider for the records of the Constitutional Convention)
National Archives: America's Founding Documents: The Bill of Rights: A Transcription; includes Transcription of the 1789 Joint Resolution of Congress Proposing 12 Amendments to the U.S. Constitution (original Bill of Rights thumbnail to right of transcript; click on magnifying glass icon to enlarge)
National Archives: America's Founding Documents: The Constitution of the United States: A Transcription (original Constitution thumbnail to right of transcript; click on magnifying glass icon to enlarge)
University of Wisconsin-Madison, Center for the Study of the American Constitution: Benjamin Franklin, Speech in Convention, 17 Sept. 1787 (transcription)
Hamilton Education Program: James Madison’s Memorial and Remonstrance against Religious Assessments, 1785 (transcription, digital copy of original available for download)
National Archives: Milestone Documents: Virginia Plan (1787) (scanned original and transcription)
Library of Congress: Creating the United States: Solution to Dispute Over Electing a President (scanned original with transcription of relevant part)
National Archives: Milestone Documents: President George Washington's First Inaugural Speech (1789) (scanned original and transcription)
National Archives: Milestone Documents: Federal Judiciary Act (1789) (scanned original and transcription)