A man named Governor Morris of Pennsylvania was in charge of the committee to draft the final copy of the Constitution. Other men who had much to do with writing the Constitution included John Dickinson, Governor Morris, Thomas Jefferson, John Adams, Thomas Paine, Edmund Randolph, James Madison, Roger Sherman, James Wilson, and George Wythe. Morris was given the task of putting all the convention's resolutions and decisions into polished form. Morris actually "wrote" the Constitution. The original copy of the document is preserved in the National Archives Building in Washington, D.C.

Jacob Shallus who, at the time, was assistant clerk of the Pennsylvania State Assembly, and whose office was in the same building in which the Convention was held, was given the task of engrossing the Constitution prior to its being signed.

Here is more input from other WikiAnswers contributors:

• The U.S. Constitution is the work of several men, directly and indirectly. The three most notable persons whose work influenced the Constitution but who were not involved in its writing are Thomas Jefferson, John Adams and Thomas Paine. The group of men involved in the writing of the Constitution are generally referred to as the "framers".

• No single individual wrote it. Twelve of the thirteen states sent delegates to the Constitutional Convention to revise the Articles of Confederation and the entire convention worked on it. After the political questions were hashed out a 'committee of style' was formed to put the ideas into formal words. It is generally accepted that Governor Morris created most of the actual wording included in the final draft from the Committee of Style.

• The original copy of the document is preserved in the National Archives Building in Washington, D.C.

• The person most associated with authoring the US Constitution was James Madison, the fourth President of the United States. Primary Author: James Madison (drafted the Virginia Plan). He is known as "The Father of the Constitution." James Madison wrote the Constitution in 1787. The constitution wasn't passed until 1788.

The US Constitution was written by the members of the Constitutional Convention.