Columbia subject headings:
Dakota Indians--Missions.
Harvard subject headings:
Dakota Indians--Missions
Dakota Indians--Missions--Minnesota--Fort Snelling.
Indians of North America--Missions--Great Plains.
Missionaries--Great Plains--Biography.
Riggs, Mary Ann Clark Longley, 1813-1869.
Riggs, Stephen Return, 1812-1883
Princeton subject headings:
Dakota Indians--Missions.