Great Trail Mare Or a Brood Mare

The city was established east of the former site of Fort Caspar, which was built during the mid-19th century mass migration of land seekers along the Oregon, California and Mormon trails. The area was the location of several ferries that offered passage across the North Platte River in the early 1840s. In 1859, Louis Guinard built a bridge and trading post near the original ferry locations. The government soon posted a military garrison nearby to protect telegraph and mail service. It was under the command of Lieutenant Colonel William O.