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The Constitution of the United States of America: Welcome

Resources for research on the U.S. Constitution

The U.S. Constitution

The U.S. Constitution established America's national government and fundamental laws, and guaranteed certain basic rights for its citizens. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia.

The Constitution of the United States of America

Constitution Day commemorates the formation and signing of the U.S. Constitution by thirty-nine brave men on September 17, 1787, recognizing all who, whether born in the U.S. or by naturalization, have become citizens.

Predecessors to the U.S. Constitution

Consult a librarian

If you would like in-person help, you can make an appointment for a consultation with a librarian who specializes in your subject area. Please visit the Subject Librarians page for a list of librarians and their contact information. 

If you would prefer, use this form to request a consultation. 

 

National Constitution Center