1. On August 10, 1970, the Mann Gulch fire in Montana claimed the lives of thirteen firefighters. The tragedy led to significant changes in firefighting safety procedures and was the subject of Norman Maclean's book "Young Men and Fire."

2. Montana's first woman state senator, Mary M. Condon, was born on August 10, 1891. Condon served two terms in the state senate, from 1933 to 1937, and was a strong advocate for women's rights and rural education.

3. In 1805, Meriwether Lewis and William Clark passed through Montana on their famous expedition to explore the western territory of the United States. On August 10 of that year, the expedition crossed the Missouri River near present-day Cascade, Montana.

4. August 10, 1916, saw the founding of the Montana Cooperative Extension Service, which provided educational outreach programs to farmers and ranchers across the state. The Extension Service remains an important resource for agricultural education to this day.

5. The Montana State Capitol building was officially dedicated on August 10, 1902. The building, which still serves as the home of Montana's state government, is located in the capital city of Helena and was designed in the Neoclassical style by architect Charles Bell.