1. In 1923, the Hollywood sign was unveiled in Los Angeles, California. Originally intended as an advertisement for a real estate development, the sign quickly became an iconic symbol of Hollywood and the film industry.

2. On July 24, 1847, Mormon pioneers led by Brigham Young entered the Salt Lake Valley in what is now Utah. This event marked the end of the Mormon Pioneer Trek and the beginning of their settlement in the area.

3. In 1862, the Battle of Kernstown was fought in the Shenandoah Valley of Virginia during the American Civil War. The California 1st Regiment, a Union army unit composed mainly of Californian volunteers, participated in the battle and suffered heavy casualties.

4. On July 24, 1952, the California Supreme Court reinstated the Communist Party of the United States after it had been banned by the state's Attorney General. The decision was based on the principle of free speech and was seen as a victory for civil liberties.

5. In 1979, the first space shuttle landing occurred at Edwards Air Force Base in California. The shuttle, named "Enterprise," was carried to an altitude of 26,000 feet by a modified Boeing 747 and then released to glide back to the runway. This test flight paved the way for future space shuttle missions.