Celebrate America's 250th birthday with five facts about amendments to the U.S. Constitution including the 13, 14, 15, 16, and 19th amendments.

The Amendment Process, Harry S. Truman Library

Sixteenth Amendment to the United States Constitution, Wikipedia

The Constitution of the United States, Commission on the Bicentennial of the United States Constitution, Boy Scouts of America

Women's America: Refocusing the Past by Linda K. Kerber and Jane Sherron De Hart