Here are some interesting facts about February 13 in Colorado history:

1. In 1861, the Colorado Territory was created by an act of Congress which was signed into law by President James Buchanan on February 28th. At that time, Colorado was part of the Kansas, Nebraska, and Utah territories.

2. The famous Colorado Silver Boom started in 1879, when silver ore was discovered in the mountains near Leadville, Colorado. The discovery led to a rush of miners, prospectors, and investors who came to Colorado looking for their fortunes.

3. On February 13, 1900, the Colorado State Capitol building was completed and opened to the public. Designed by architect Elijah E. Myers, the building is made of Colorado granite and is modeled after the United States Capitol building in Washington, D.C.

4. In 1962, the University of Denver hosted the VIII Olympic Winter Games. This was the first time the Olympic Games were held in the Western Hemisphere, and Colorado became the center of international attention for two weeks.

5. On February 13, 2002, the 20th Winter Olympics in Salt Lake City, Utah, opened with fireworks and fanfare. Several athletes from Colorado competed in the games, including bobsledder Jake Fiala, who won a bronze medal.