Columbia subject headings:
Photography museums--History.
Photography--Exhibitions--History.
Political posters--Exhibitions--History.
Harvard subject headings:
Exhibitions--Political aspects--History--20th century.
Photography--History--Exhibitions
Photography--Political aspects--Exhibitions.
Photography--Political aspects--History--Exhibitions.
Propaganda--Exhibitions.
Propaganda--History--20th century--Exhibitions.
Princeton subject headings:
Photography--History--Exhibitions.
Photography--Political aspects--History--Exhibitions.
Propaganda--Exhibitions.