1. On September 5, 1905, the famous fire tower at Lookout Butte in Montana was completed. The tower, standing at 46 feet tall, is still in use today as a lookout for wildfires.

2. In 1911, the first "Yellowstone Trail" was dedicated on September 5 in Montana. The trail was an early automobile route that connected Seattle, Washington to Boston, Massachusetts and passed through Montana.

3. On September 5, 1922, William A. Clark died in New York City. Clark was a prominent mining magnate and politician in Montana, where he served as a senator and was one of the owners of the Anaconda Copper Company.

4. In 1965, the Montana State University Billings campus was officially dedicated on September 5. The campus began as a two-year college in 1927 and has since grown to include several four-year degree programs.

5. On September 5, 2007, the Lolo Peak Fire in western Montana became the largest fire in the state that year. The fire burned over 8,500 acres of land and destroyed several homes, but was ultimately contained a few weeks later.