List of winners of the National Book Award
Arts and Letters

1964
Aileen Ward
John Keats: The Making of a Poet (biog. John Keats)
1965
Eleanor Clark
The Oysters of Locmariaquer
1966
Janet Flanner
Paris Journal, 1944-1965
1967
Justin Kaplan
Mr. Clemens and Mark Twain: A Biography (biog. Mark Twain)
1968
William Troy
Selected Essays
1969
Norman Mailer
The Armies of the Night: History as a Novel, The Novel as History
1970
Lillian Hellman
An Unfinished Woman: A Memoir
1971
Francis Steegmuller
Cocteau: A Biography (biog. Cocteau)
1972
Charles Rosen
The Classical Style: Haydn, Mozart, Beethoven
1973
Arthur M. Wilson
Diderot (biog. Denis Diderot)
1974
Pauline Kael
Deeper into Movies
1975
Roger Shattuck
Marcel Proust (biog. Marcel Proust)
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Lewis Thomas
The Lives of a Cell: Notes of a Biology Watcher
1976
Paul Fussell
The Great War and Modern Memory

Question: Which book of Pauline Kael's won the National Book Award?
Answer: Pauline Kael's Deeper into Movies won the U.S. National Book Award in the Arts and Letters.