1. In 1978, the Winter Olympics were held in Lake Placid, New York, and a Colorado team brought home five gold medals in skiing and figure skating.
2. On February 5, 1994, the Denver Broncos played in their first Super Bowl, but were defeated by the San Francisco 49ers 55-10.
3. On February 5, 1919, the United States and Canada signed the Migratory Bird Treaty, protecting migratory birds and their habitats.
4. In 1944, the Camp Carson internment camp in Colorado closed, relocating over 7,000 Japanese-American internees to other locations.
5. On February 5, 1887, Grover Cleveland signed the Dawes Severalty Act, which authorized the division of Native American tribal land into individual allotments. The act resulted in the loss of millions of acres of Native American land.