Frontz's/South Platte Station site is one of two stations within Colorado and was presumably two miles east of present Julesburg, in Sedgwick County. Sources generally agree on its identity as a station, known either as Frontz's or South Platte. A marker improperly identifies the site as Butte Station, which Merrill Mattes lists as a separate ranch known as Butt's or Burt's. Little more is known about this Pony Express station.  (NPS)