Columbia subject headings:
Conversion.
Missionaries--South Africa--Transvaal.
Rooizak.
Harvard subject headings:
Converts--South Africa--Lydenburg--Biography.
Missionaries--South Africa--Lydenburg--Biography.
Missions--South Africa--History.
Nachtigal, Albert.
Rooizak.
South Africa--Church history.
Princeton subject headings:
Conversion.
Missionaries--South Africa--Transvaal.
Rooizak.