Columbia subject headings:
Motion pictures--History--20th century.
Motion pictures.
Schmidt, Arno, 1914-1979--Knowledge and learning.
Silent films--History and criticism.
Harvard subject headings:
Motion pictures--History--20th century
Schmidt, Arno, 1914-1979--Criticism and interpretation.
Silent films--History and criticism
Princeton subject headings:
Motion pictures--History--20th century.
Schmidt, Arno, 1914-1979--Knowledge--Motion pictures.
Silent films--History and criticism.