A number of Old West gangs left a lasting impression on American history. While rare, the incidents were retold and embellished by dime novel and magazine authors during the late 19th and the early 20th century. The most notable shootouts took place on the American frontier in Arizona, New Mexico, Kansas, Oklahoma, and Texas. Some like the Gunfight at the O.K. Corral were the outcome of long-simmering feuds and rivalries, but most were the result of a confrontation between outlaws and law enforcement.