Late 1940s literature saw a boom in book sales, with non-fiction novels about WWII thriving and most fiction exploring the postwar society. Notable works included Dr. Spock's Commonsense Book of Baby and Child Care and Shirley Jackson's The Lottery. The 1950s saw a rise in science fiction and novels examining the conflict between individuals and conformity. The 1960s reflected political and social issues like the civil rights movement in Harper Lee's To Kill a Mockingbird. Literature in the 1970s explored a society drifting from spiritual roots, while the 1980s saw the rise of popular non-fiction bestsellers. Overall, American literature reflected the themes and culture of its time period.