Here are five interesting facts about June 10 in Colorado history:

1. In 1861, the First Regiment of Colorado Volunteers was organized in Denver to fight for the Union Army during the American Civil War.

2. In 1887, the Colorado State Legislature passed an act to establish the University of Colorado, which opened its doors in September of that year.

3. In 1933, the first drive-in movie theater in Colorado opened in Denver. It was called the Motor-Vu Theater and featured a 40-foot screen, a playground for children and a concession stand.

4. In 1984, the Denver Nuggets, led by star player Alex English, made it to the NBA Western Conference Finals for the first time in franchise history. They lost to the Los Angeles Lakers in five games.

5. In 2013, devastating floods swept through Colorado, causing widespread damage and claiming the lives of several people. The floods were caused by heavy rains that fell over several days and affected many communities, including Boulder, Longmont, and Estes Park.