1. On February 13, 1865, the Idaho Territorial Legislature passed a law declaring that all able-bodied men between the ages of 18 and 45 were required to join the territorial militia. This law was passed during the Civil War when there was concern about potential Confederate sympathizers in Idaho.

2. In 1918, the first case of Spanish flu was reported in Idaho on February 13th. This deadly pandemic ultimately claimed the lives of over 2,000 Idaho residents.

3. On February 13, 1933, the Idaho State Capitol Building was officially dedicated. The building took nearly ten years to construct and is one of the most recognizable landmarks in Idaho.

4. The College of Southern Idaho was established on February 13, 1964. The college serves over 8,000 students annually and is known for its strong agricultural and technical programs.

5. On February 13, 1983, the Sawtooth National Recreation Area was officially established. This 756,000-acre wilderness area is home to some of the most spectacular views in Idaho, including the iconic Sawtooth Mountains. The area draws visitors from all over the world for its world-class hiking, biking, and skiing opportunities.