Colorado has been a UFO hotspot for more than 100 years. This is the first book to present a comprehensive history of extraterrestrial encounters in the Centennial State. Arranged by decade, read a dazzling array of sightings, landings, face-to-face encounters, onboard experiences, and UFO crash/retrievals. Colorado UFO cases have had a profound effect on UFO research. The 1967 mutilation of Lady the horse in Alamosa introduced the world to the animal mutilation phenomenon. The 1995 videotape footage by Tim Edwards of a UFO over Salida remains some of the best evidence ever recorded. The extraterrestrial experiences of Denver businessman Stan Romanek are among the best-verified in UFO history. The San Luis Valley in southern Colorado has produced hundreds of cases and is one of the most active areas on the planet. This book will explore these famous cases and many others never before published.