1. In 1879, the first steam-powered carousel in Colorado was invented by Mr. A. J. Ingersoll of Denver. Known as the Ingersoll Steam-Driven Amusement Ride, it was the first mechanical ride of its kind in the state and became popular at fairs and amusement parks.

2. On September 6, 1901, The Estes Park Trail was established, a weekly newspaper serving the Estes Park area of Colorado. The paper covered local news, events, and activities, and has been in continuous publication for over a century.

3. In 1950, the world-renowned Aspen Music Festival and School was founded in Aspen, Colorado. The festival attracts musicians from around the world to perform and study classical music, and has become a major cultural event for the state.

4. September 6, 1985, saw the opening of the Colorado Convention Center in downtown Denver. The center features over 800,000 square feet of exhibit, meeting, and ballroom space and has hosted events ranging from trade shows to political conventions.

5. On September 6, 2004, a landslide occurred near the town of Collbran, Colorado, that was the largest ever recorded in a mountainous area. The slide covered over 3 square miles and created a 700-foot-high dam that blocked a tributary of the Colorado River. The incident led to significant changes in how the state manages the risk of landslides.