1. On September 29, 1864, the Territory of Idaho was established. At the time, Idaho was part of the larger Idaho Territory, which included parts of present-day Montana and Wyoming.

2. On September 29, 1904, the Idaho State Capitol building was dedicated in Boise. The building, which was designed by architect John E. Tourtellotte, features unique architectural elements like a copper dome and a rotunda.

3. On September 29, 1955, Earl and Miriam Corey began a 277-day canoe trip down the length of the Snake River. The couple, who were both college professors, used their journey to study the ecology and geology of the river.

4. On September 29, 1970, the first Idaho Lottery was held. The lottery was established to increase funding for education, and it has since generated billions of dollars in revenue for Idaho schools.

5. On September 29, 2014, the U.S. Supreme Court refused to hear an appeal from the Coeur d'Alene Tribe, which was seeking to establish a reservation on land near the city of Worley. The court's decision effectively ended the tribe's decades-long battle for sovereignty over the area.