1. Idaho officially became a state: On October 1, 1890, Idaho officially became the 43rd state in the United States, after being a territory for 26 years. This day is celebrated as Idaho Statehood Day.

2. First television station in Boise: On October 1, 1953, KTVB, the first television station in Boise and the state of Idaho, began broadcasting. It was originally affiliated with the NBC network.

3. Idaho's Notorious Serial Killer: On October 1, 2006, Joseph Duncan, a notorious serial killer who murdered a family of four in Coeur d'Alene, Idaho, was sentenced to death for his crimes.

4. Idaho's First Game and Fish Commission Meeting: On October 1, 1939, the first meeting of the Idaho Game and Fish Commission was held. This organization oversees the management of Idaho's wildlife and fisheries.

5. Boise River Greenbelt Dedication: On October 1, 1967, the first 11 miles of the Boise River Greenbelt were officially dedicated. The Greenbelt is a popular walking and biking trail that follows the Boise River through the heart of the city.