Columbia subject headings:
History, Modern--20th century.
Photojournalism.
Harvard subject headings:
History, Modern--20th century--Pictorial works
Photojournalism--History--20th century.
Photojournalism.
Twentieth century--Pictorial works
Princeton subject headings:
History, Modern--20th century--Pictorial works.
Photojournalism--History--20th century.
Twentieth century--Pictorial works.