When Tolstoy's The Kreutzer Sonata was banned from distribution through the mail (except for first class) in 1890, New York street vendors began selling it from pushcarts carrying large signs reading ""Suppressed!"" In 1961, the United States Supreme Court pondered whether D.H. Lawrence's Lady Chatterley's Lover was lewd or literary. In 1969, the novel was required reading in many college literature courses. Changing sexual mores have moved many formerly forbidden books out of locked cabinets and into libraries and classrooms.