1) In 1806, Meriwether Lewis and William Clark passed through Montana on their famous expedition exploring the western territory.
2) On July 27, 1901, the Great Northern Railway reached the city of Kalispell, Montana, connecting it to the national railroad network.
3) Montana became the 41st state in the United States on November 8, 1889, but July 27, 1889, marked the day the state's constitution was written and approved by the Constitutional Convention.
4) A devastating wildfire known as the Mann Gulch Fire occurred in Montana on July 27, 1949, claiming the lives of 13 firefighting smokejumpers.
5) On July 27, 1967, the National Park Service established the Nez Perce National Historic Trail in Montana, commemorating the journey of the Nez Perce tribe during their fight to resist forced removal by the U.S. government.