1. In 1937, the Hoover Dam was officially dedicated by President Franklin D. Roosevelt. The dam, located on the Colorado River between Arizona and Nevada, provides hydroelectric power to several states in the southwestern United States.

2. On May 25, 1961, astronaut Stuart Roosa was born in Durango, Colorado. Roosa later became a member of NASA's astronaut corps and flew on the Apollo 14 mission in 1971. During his mission, Roosa carried tree seeds that were later planted as part of a project to study the effects of space travel on plant growth.

3. In 1978, Arizona's first female governor, Rose Mofford, was sworn in following the resignation of Governor Wesley Bolin. Mofford served as governor until 1987 and was known for her no-nonsense approach and dedication to public service.

4. On May 25, 2006, the Phoenix Art Museum opened a new 143,000 square foot addition, adding more than 50 percent to the museum's gallery space. The expansion included new exhibition galleries, a sculpture garden, and an education center.

5. In 2018, Governor Doug Ducey signed a bill naming the Apache trout as Arizona's official state fish. The Apache trout, which is native to Arizona and New Mexico, was threatened with extinction in the 1950s but has since rebounded thanks to conservation efforts.