1. In 1871, photographer William Henry Jackson took the first known photograph of Yellowstone National Park. Jackson was part of the Hayden Geological Survey, which was exploring the area and documenting its natural wonders.

2. On April 5, 1893, Montana Governor John E. Rickards signed a bill establishing Montana State University (MSU) in Bozeman. The school was originally named the Agricultural College of the State of Montana and offered courses in agriculture, mechanical arts, and domestic science.

3. The Anaconda Copper Company, one of Montana's largest mining companies, was founded on April 5, 1881. The company played a significant role in the state's economy for nearly a century, but was also known for its controversial labor practices and environmental impact.

4. On April 5, 1922, the Butte City Council passed a resolution banning the use of the Finnish language in public places, including schools and churches. The resolution was part of a wider campaign of discrimination against Finnish immigrants, who had become a significant presence in the area's mining industry.

5. In 1967, the Montana State Capitol building in Helena was officially dedicated. The building, which was designed in the Classical Revival style, features a copper dome that is plated with gold leaf. It remains one of the most recognizable landmarks in the state.