Columbia subject headings:
Harvard subject headings:
Photography, Erotic--History--19th century.
Photography, Erotic--History--20th century.
Photography--Japan--History--19th century.
Photography--Japan--History--20th century.
Princeton subject headings:
Photography, Erotic--History--19th century.
Photography, Erotic--History--20th century.
Photography--Japan--History--19th century.
Photography--Japan--History--20th century.