Columbia subject headings:
Harvard subject headings:
Hahn, Emma Sarah, 1814-1880--Correspondence.
Missionaries--Great Britain--Correspondence.
Missionaries--Namibia--Correspondence.
Namibia--Description and travel.
Namibia--History--To 1884--Sources.
Princeton subject headings:
Hahn, Carl Hugo, 1818-1895--Correspondence.
Hahn, Emma Sara, 1814-1880--Correspondence.
Herero (African people)--Missions--Namibia--History--Sources.
Missionaries--Namibia--Biography.
Missionaries--Namibia--Correspondence.
Missions--Namibia--History--Sources.
Namibia--History--Sources.
Rheinische Missionsgesellschaft--History--Sources.
Women missionaries--Namibia--Correspondence.