Columbia subject headings:
Art--Philosophy.
Bacon, Francis, 1909-1992--Themes, motives.
Hopper, Edward, 1882-1967--Themes, motives.
Harvard subject headings:
Art--Philosophy
Bacon, Francis, 1909-1992--Themes, motives.
Hopper, Edward, 1882-1967--Themes, motives.
Princeton subject headings:
Bacon, Francis, 1909-1992.
Hopper, Edward, 1882-1967.
Painting, American--20th century.
Painting, Modern--20th century--Great Britain.