1. On September 19, 1796, President George Washington gave his Farewell Address to the nation at the Maryland State House in Annapolis, Maryland. In his address, Washington warned against the dangers of political parties and urged unity among Americans.

2. On September 19, 1874, the first National Grange Fair was held in Washington, DC. The event showcased the agricultural products and innovations of farming communities across the country.

3. On September 19, 1902, President Theodore Roosevelt dedicated the New Executive Mansion, which is now known as the White House. The renovation and expansion of the building had taken place over the previous four years.

4. On September 19, 1957, the first nine African American students were escorted by the National Guard into Little Rock Central High School in Arkansas. The event marked a turning point in the Civil Rights Movement and the fight against segregation.

5. On September 19, 2016, the National Museum of African American History and Culture opened its doors to the public. The museum is located on the National Mall in Washington, DC, and features exhibits and artifacts that explore the African American experience in the United States.