Columbia subject headings:
Harvard subject headings:
Casper (Wyo.)--History.
Fort Caspar (Wyo.)--History.
Oregon National Historic Trail--History.
Platte Bridge, Battle of, Wyo., 1865.
Princeton subject headings:
Fort Caspar (Wyo.)
Frontier and pioneer life--North Platte River Valley.
Indians of North America--North Platte River Valley--History--19th century.
Military bases, American--North Platte River Valley--History--19th century.
North Platte River Valley--History--19th century.
Overland journeys to the Pacific.
Pioneers--North Platte River Valley.
Wyoming--History--19th century.