1. In 1776, Spanish explorer Pedro Gallego de Chaves discovered the Chaco Canyon, a historic site in northwestern New Mexico that was once inhabited by a Native American civilization.

2. In 1881, the Earp brothers and Doc Holliday arrived in Tombstone, Arizona Territory, after a long journey from Dodge City, Kansas. This event eventually led to the infamous Gunfight at the O.K. Corral, which took place 5 days later on October 31, 1881.

3. In 1916, the first commercial flight between Albuquerque and Santa Fe took place. The pilot was Henry W. Frauenthal, and the flight took just 23 minutes.

4. In 1943, the Los Alamos National Laboratory was established in Los Alamos, New Mexico. This atomic research facility played a significant role in the development of the atomic bomb during World War II.

5. In 1987, the Museum of International Folk Art opened in Santa Fe. The museum's collection includes over 130,000 objects from all over the world, and it is one of the largest collections of its kind in the world.