Columbia subject headings:
History, Modern, in literature.
Hitler, Adolf, 1889-1945--Fiction.
May, Karl, 1842-1912--Fiction.
Harvard subject headings:
History, Modern, in literature.
History, Modern--20th century--Fiction.
Hitler, Adolf, 1889-1945--Fiction.
May, Karl, 1842-1912--Fiction.
Princeton subject headings:
Fiction.