1. In 1832, the Franklin School was dedicated in Washington, D.C. The building served as a school until 1978, after which it was declared a National Historic Landmark.

2. On July 24, 1901, William McKinley, the 25th President of the United States, visited Washington, D.C. for the last time before his assassination in September of that year.

3. The first flight of a U.S. Army Air Service (later known as the Air Force) bomber took place on July 24, 1921, at Langley Field in Virginia. The aircraft was a Martin NBS-1.

4. In 1959, the newly-built D.C. Armory hosted its first event, a multi-sport exhibition featuring professional boxers and wrestlers.

5. On July 24, 1974, the Supreme Court of the United States issued its landmark decision in United States v. Nixon, ordering President Richard Nixon to turn over secret tapes related to the Watergate scandal. The ruling set a precedent for the limits of executive privilege.