How did the Catholic religion come to existence in Colorado?

Thomas Noel in his book on Colorado Catholicism says that the Franciscan Friars were the first to explore, map, and write about Colorado. You may read about his book at the link below:
Thomas Noel in his book on Colorado Catholicism says that the Franciscan Friars were the first to explore, map, and write about Colorado. You may read about his book at the link below: