Columbia subject headings:
Businessmen--South Africa--Correspondence.
Gold mines and mining--South Africa--History.
Phillips, Lionel, 1855-1936.
Harvard subject headings:
Businessmen--South Africa--Correspondence.
Gold mines and mining--South Africa--History.
Phillips, Lionel, 1855-1936.
Princeton subject headings:
Businesspeople--South Africa--Correspondence.
Gold mines and mining--South Africa--History.
Phillips, Lionel, 1855-1936.