1. Birth of Montana's First State Senator: May 19, 1862, marks the birth of Montana's first state senator, James E. Murray, who served from 1893 to 1913. Murray was a member of the Democratic Party and was known for his advocacy for Montana's mining and agricultural interests.

2. Montana's First International Air Mail Delivery: On May 19, 1930, Montana became the first state in the United States to receive international air mail. The mail delivery came from Calgary, Canada, and marked an important milestone in the history of air mail delivery in Montana.

3. Death of Montana's First Governor: Montana's first governor, Sidney Edgerton, died on May 19, 1900. Edgerton was a prominent lawyer and politician who played a key role in the development of Montana's mining industry.

4. Dedication of the Montana State Capitol: On May 19, 1902, the Montana State Capitol was dedicated in Helena, the state's capital city. The building was designed by architects Charles Bell and John Kent and features a neoclassical design with impressive columns and marble accents.

5. Establishment of the University of Montana: On May 19, 1893, the University of Montana was established in Missoula. The university has since played a significant role in the education and economic development of Montana, with notable alumni including actor J.K. Simmons and former U.S. Senator Conrad Burns.