1. In 1910, construction began on the Roosevelt Dam in Arizona. The dam was completed in 1911 and was the tallest masonry dam in the world at the time. It provided water and hydroelectric power to the surrounding area, contributing to the growth of the agricultural industry in Arizona.

2. On July 14, 1930, the famous outlaw John Dillinger was captured by FBI agents in Tucson, Arizona. Dillinger had been on the run for over a year, and his arrest was considered a major victory for law enforcement at the time.

3. In 1969, a total solar eclipse occurred over parts of the southwestern United States, including Arizona. The eclipse lasted for almost 7 minutes in some areas, making it one of the longest total solar eclipses of the 20th century.

4. On July 14, 1983, Herb Drinkwater was elected as the mayor of Scottsdale, Arizona. Drinkwater served as mayor for over 16 years and was credited with transforming Scottsdale into a major tourist destination and cultural center.

5. In 2011, the Wallow Fire, the largest wildfire in Arizona history, was finally contained after burning for over a month. The fire, which started on May 29, burned over 538,000 acres of land and caused millions of dollars in damage.