Columbia subject headings:
Gilbert, W. S. (William Schwenck), 1836-1911. Mikado.
Sullivan, Arthur, 1842-1900. Mikado.
Harvard subject headings:
English literature--19th century
Gilbert, W. S. (William Schwenck), 1836-1911. Mikado.
Princeton subject headings:
Fiction.
Sullivan, Arthur, 1842-1900. Mikado.