1. On September 13, 1904, the first ever State Fair in Montana opened its doors in the city of Helena. This event celebrated the agricultural and industrial achievements of the state, and attracted thousands of visitors from across Montana and beyond.

2. The famous Crow Indian leader Plenty Coups died on September 13, 1932. Plenty Coups was instrumental in negotiating with the US government to secure rights and lands for the Crow tribe, and he remains a revered figure in Montana's Native American history.

3. In 1963, President John F. Kennedy visited Montana on September 13 as part of a nationwide tour. During his visit, he gave a speech at the University of Montana in Missoula, where he praised the state's natural beauty and called for increased conservation efforts.

4. On September 13, 1975, Montana State University football player Mike Kramer set a record that still stands today. Kramer threw for 22 completions in a single game, and led his team to a 34-7 victory over Weber State.

5. In 2002, September 13 was designated as "Montana Native Plants Day" by the state's governor. The day is meant to promote awareness and appreciation for the many unique plant species that are found throughout Montana's diverse landscapes, from the sagebrush steppe to the alpine tundra.