1. On September 7, 1865, Abraham Lincoln's assassin John Wilkes Booth's co-conspirator, George Atzerodt, was hanged in the courtyard of the Old Penitentiary in Washington, D.C. Atzerodt was found guilty of plotting to kill Vice President Andrew Johnson.

2. The Washington Monument, which stands at 555 feet, was opened to the public on September 7, 1888. It was the tallest structure in the world at the time of its completion.

3. September 7, 1993, saw the historic signing of the Oslo Accords between Israel and Palestine at the White House in Washington, D.C. President Bill Clinton presided over the signing ceremony, which was attended by Israeli Prime Minister Yitzhak Rabin and Palestine Liberation Organization Chairman Yasser Arafat.

4. The famous jazz musician John Coltrane played his last concert in Washington, D.C., on September 7, 1967. Coltrane, who was suffering from liver cancer, performed at the Showboat Lounge with his quintet, just a few months before his death.

5. On September 7, 1776, during the American Revolution, British troops led by General William Howe occupied New York City. The British forces controlled the city until 1783, when they were forced to evacuate following the signing of the Treaty of Paris, which ended the war.