1. Arizona Statehood Day: On October 6, 1910, President William Howard Taft signed a proclamation that officially made Arizona the 48th state in the United States.

2. Charles Lummis Day: October 6 is also celebrated in Arizona as Charles Lummis Day, in honor of the American journalist, historian, and anthropologist who founded the Southwest Museum in Los Angeles, California in 1907. Lummis was a strong advocate for Native American rights and the preservation of indigenous cultures.

3. The Bisbee Deportation: On October 6, 1917, approximately 1,200 striking miners in Bisbee, Arizona were rounded up by a group of deputized citizens and forcibly deported to New Mexico. The event, known as the Bisbee Deportation, was a notorious incident in Arizona labor history and resulted in the loss of civil liberties for many residents.

4. The Arizona Cardinals: On October 6, 1988, the St. Louis Cardinals football team announced that they would be moving to Phoenix, Arizona and changing their name to the Arizona Cardinals. The team played its first game in Arizona on September 10, 1989, in the newly-constructed Sun Devil Stadium.

5. The Waco Siege: On October 6, 1993, the Bureau of Alcohol, Tobacco, and Firearms (ATF) attempted to execute a search warrant at the Branch Davidian compound in Waco, Texas, resulting in a gun battle that left four ATF agents and six Davidians dead. The siege would continue for 51 days, eventually ending in a fiery siege that killed 76 people, including the group's leader, David Koresh. The event had significant impact on the modern-day militia movement in Arizona and across the United States.