Judge Isaac Parker served as U.S. District Judge 1875–1896. He was nicknamed the "Hanging Judge": in his first term after assuming his post, he tried 18 people for murder, convicted 15 of them, and sentenced eight of those to die. Six of these men were later hanged on the same day. Over the course of his career in Fort Smith, Parker sentenced 160 people to death. Of those, 79 were executed on the gallows. His courthouse is now marked as a National Historic Site, where "more men were put to death by the U.S. Government... than in any other place in American history."