Columbia subject headings:
Harvard subject headings:
Art, African--Private collections--South Africa--Johannesburg--Catalogs.
Art--South Africa--Johannesburg--Catalogs.
Horstmann, Udo--Art collections--Catalogs.
Princeton subject headings:
Art, Black--Africa, Southern--Catalogs.
Art, Black--Africa--Catalogs.
Art--Private collections--South Africa--Catalogs.
Art--Private collections--South Africa--Johannesburg--Catalogs.
Catalogs.
Horstmann, Udo--Art collections--Catalogs.
Horstmann, Udo--Art collections.