1. Idaho became a state on July 3, 1890. On February 3, 1891, the Idaho State Legislature convened for its first session as a state.

2. The Teton Dam disaster, one of the worst engineering disasters in U.S. history, occurred in eastern Idaho on June 5, 1976. However, on February 3, 1972, the U.S. Bureau of Reclamation announced its plans to build the dam, which was intended to provide irrigation water to the Snake River Plain.

3. On February 3, 1935, the first ski resort in Idaho, Sun Valley, opened its doors to the public. The resort, located in Blaine County, quickly became a popular destination for winter sports enthusiasts.

4. The Idaho National Laboratory (INL), located in southeastern Idaho, is one of the nation's leading nuclear research facilities. On February 3, 1951, the INL officially began its operations as the National Reactor Testing Station.

5. On February 3, 1864, Confederate soldiers attacked the town of Franklin, Idaho, killing one man and burning down several buildings. The attack was part of a larger campaign by Confederate forces to destabilize Western territories and disrupt Union supply lines.