National Archives and Records Administration

The Avalon Project at Yale Law School

The Center for the Study of the American Constitution (CSAC) is a non-profit, non-partisan center dedicated to serving scholars, educators, and students who are interested in the American Constitution in its historical context.

The Constitutional Sources Project (ConSource) exists to increase understanding, facilitate research, and encourage discussion of the U.S. Constitution by connecting individuals with the documentary history of its creation, ratification, and amendment. Since October 2020 the digital archives and the research underpinning them has been part of The Quill Project at Pembroke College, University of Oxford, and is part of a broader project to study the history of American constitutional law.

National Archives and Records Administration

This page from the National Archives and Records Administration is devoted to teaching the U.S. Constitution. Use this page to find primary sources related to the Constitution, as well as document-based learning activities.

This online version of the Founders Constitution is a joint venture of the University of Chicago Press and the Liberty Fund.

On this site from the National Constitution Center, constitutional experts interact with each other to explore the Constitution’s history and what it means today. For each provision of the Constitution, scholars of different perspectives discuss what they agree upon, and what they disagree about.

The Center for the Study of the American Constitution, in partnership with University of Wisconsin Libraries’ Digital Collections, presents The Documentary History of the Ratification of the Constitution (DHRC) series, including supplemental documents, available free of charge in an online edition.