1. On June 11, 1919, the first air mail flight in Arkansas took place, delivering mail from Memphis to Little Rock.

2. In 1957, the Little Rock Nine, a group of African American students, graduated from Little Rock Central High School on June 11, despite facing intense opposition and violence during their time there.

3. On June 11, 1889, the Arkansas State Flag was officially adopted. The flag features a diamond shape, symbolizing the state's status as the only diamond-producing state in the US.

4. In 1947, the Arkansas Post National Monument was established on June 11, preserving the site of the first European settlement in the state.

5. On June 11, 1914, the USS Arkansas was commissioned, becoming the first US Navy ship named after the state. The battleship saw action in both World War I and World War II before being decommissioned in 1946.