Columbia subject headings:
Harvard subject headings:
Documentary photography--Exhibitions
Mineral industries--Germany--Freiberg--History--20th century--Pictorial works--Exhibitions.
Miners--Germany--Freiberg--History--20th century--Portraits--Exhibitions.
Photography in mining--Exhibitions.
Princeton subject headings:
Documentary photography--Exhibitions.
Mineral industries--Germany--Freiberg--History--20th century--Pictorial works--Exhibitions.
Miners--Germany--Freiberg--History--20th century--Portraits--Exhibitions.
Photography in mining--Exhibitions.
Portraits.