1. In 1912, Arizona became the 48th state of the United States, officially completing the contiguous 48 states of the country.
2. In 1933, the Arizona State Library and Archives was established, providing a centralized location for the state's historical records and documents.
3. In 1968, Robert F. Kennedy, then a candidate for U.S. President, was assassinated at the Ambassador Hotel in Los Angeles. Kennedy had visited Arizona just prior to the California primary.
4. In 2006, the Phoenix Suns NBA team won Game 6 of the Western Conference Finals against the Dallas Mavericks, clinching their spot in the NBA Finals for the first time since 1993.
5. In 2012, the Yarnell Hill Fire began in Yarnell, Arizona. The wildfire tragically claimed the lives of 19 firefighters from the Granite Mountain Hotshots.