Answer: On September 17, Washington signed the parchment copy first, as President of the convention.
On September 17, 1787, 39 delegates to the Constitutional Convention meeting in Philadelphia, voted to adopt the United States Constitution.
To recap these events:
Working from May 25, when a quorum was established, until September 17, 1787, when the convention voted to endorse the final form of the Constitution, the delegates gathered in Philadelphia’s Pennsylvania State House were actually obligated only to revise or amend the Articles of Confederation. Under those Articles, however, the government was plagued by weaknesses, such as its inability to raise revenues to pay its foreign debts or maintain an army. From the outset, most the convention’s organizers, James Madison chief among them, knew that splints and bandages wouldn’t do the trick for the broken Articles.
The government was broke –literally and figuratively– and they were going to fix it by inventing an entirely new one. James Madison had been studying more than 200 books on constitutions and republican history sent to him by Thomas Jefferson in preparation for the convention. The moving force behind the convention, Madison came prepared with the outline of a new Constitution.
A reluctant George Washington, whose name was placed at the head of list of Virginia’s delegates without his knowledge, was unquestionably spurred by recent events in Massachusetts (Shay’s Rebellion, a violent protest by Massachusetts farmers). Elected president of the convention, he wrote from Philadelphia in June to his close wartime confidant and ally, the Marquis de Lafayette:
I could not resist the call to a convention of the States which is to determine whether we are to have a government of respectability under which life, liberty, and property will be secured to us, or are to submit to one which may be the result of chance or the moment, springing perhaps from anarchy and Confusion, and dictated perhaps by some aspiring demagogue.
On September 17, Washington signed the parchment copy first, as President of the convention. He was followed by the remaining delegates from the twelve states that sent delegates in geographical order, from north to south, beginning with New Hampshire. (Rhode Island was the only state that did not send a delegation.) When the last of the signatures was added –that of Abraham Baldwin of Georgia– Benjamin Franklin gazed at Washington’s chair, on which was painted a bright yellow sun. He then spoke, as James Madison recorded it:
I have, said he, often in the course of a session, and the vicissitudes of my hopes and fears as to its issue, looked at that behind the President without being able to tell if it was rising or setting: But now at length I have the happiness to know that it is a rising and not a setting sun.
In another perhaps more apocryphal tale, Franklin left the building and was confronted by a lady who asked, “Well Doctor, do we have a monarchy or a republic?” The witty sage of Philadelphia replied,
“A republic, madam, if you can keep it.”
This post is excerpted from America’s Hidden History, which offers fuller account of the Convention and the events that led to it. You can also read more about the Constitutional Convention and the Constitution in Don’t Know Much About History: Anniversary Edition, Don’t Know Much About the American Presidents and In the Shadow of Liberty.
For more about the Constitution, visit these sites:
The National Constitutional Center in Philadelphia and James Madison’s Montpelier