Columbia subject headings:
Harvard subject headings:
Indians of North America--Great Plains--History--19th century--Sources.
Indians of North America--Missions--Great Plains.
Lutheran Church--Great Plains--History--Sources.
Lutheran Church--Missions--Great Plains.
Missionaries--Great Plains--Biography.
Princeton subject headings:
Indians of North America--Great Plains--History--19th century--Sources.
Indians of North America--Great Plains--Missions.
Lutheran Church--Great Plains--History--Sources.
Lutheran Church--Missions--Great Plains.
Missionaries--Great Plains--Biography.