Columbia subject headings:
London (England). American Exhibition, 1887.
London (England). French exhibition, 1890.
London (England). German exhibition, 1891.
London (England). Italian exhibition, 1888.
Harvard subject headings:
American Exhibition (1887 : London, England)
French Exhibition (1890 : London, England)
German Exhibition (1891 : London, England)
Italian Exhibition (1888 : London, England)
London (England). American exhibition, 1887.
London (England). French exhibition, 1890.
London (England). German exhibition, 1891.
London (England). Italian exhibition, 1888.
Princeton subject headings: