1. On September 8, 1863, the town of Lewiston, Idaho was officially incorporated. It was the first incorporated city in Idaho Territory and became a hub for mining, logging, and farming industries.

2. In 1870, the first railroad in Idaho was completed on September 8. It connected the Panama Canal Company's steamship wharf on Payette Lake to the mines in Warren and other nearby towns.

3. On September 8, 1897, a group of miners in the Coeur d'Alene region went on strike in protest of low wages and poor working conditions. The strike eventually turned violent, with clashes between strikers and mine owners becoming known as the "Coeur d'Alene War".

4. The Idaho State Fair began on September 8, 1892 in Boise. It has since become an annual event that showcases the state's agriculture, industry, and culture through exhibits, entertainment, and food.

5. On September 8, 1935, adventurer and pilot Wiley Post was killed in a plane crash near Point Barrow, Alaska. Post grew up in Idaho and is known for many aviation firsts, including being the first person to fly solo around the world.