Here are five interesting facts about September 9 in Idaho history:

1. In 1905, the Idaho State Fair opened its gates for the first time in Boise. It featured horse and cattle shows, agriculture and mining exhibits, and entertainment activities like brass bands and circus performances.

2. On September 9, 1912, the legendary Jurist and politician, James McMillan, passed away at the age of 78. He had served as Idaho's delegate in the U.S. House of Representatives, and later, as the Governor of Idaho.

3. In 1928, the city of Boise inaugurated the Morrison-Knudsen Memorial Bridge across the Boise River. It was named after two Idahoans who died in World War I and was one of the first bridges in the West to use reinforced concrete.

4. On September 9, 1972, Ross Park Amphitheater in Pocatello hosted a concert by the progressive rock band Jethro Tull. It was part of their "Thick as a Brick" tour and drew a crowd of over 10,000 people.

5. In 1982, the Idaho Supreme Court issued its decision in the case of Idaho v. Freeman, which involved a group of separatists who had taken over the Silver Valley Credit Union in Athol. The court ruled that the state could use force to end the standoff and bring the suspects to justice.