The U.S. Constitution is turning 220 years old, having been ratified at the Constitutional Convention in Philadelphia on Sept. 17, 1787.
Sept. 17 marks Constitution Day, a federal holiday that does not confer a day off from work, but does recognize the auspicious occasion brought forth by the Founding Fathers.
The Library of Congress Web site is rife with resources on the framing of the Constitution. A good place to start is the Law Library's Web presentation titled "A Century of Lawmaking for a New Nation: U.S. Congressional Documents and Debates." The THOMAS legislative tracking system also has links to a number of Library sites about the Constitution, including lesson plans for teachers.