Harper Lee was the author of "To Kill a Mockingbird," which won the Pulitzer Prize in 1961. The novel addresses themes of racial injustice and moral growth through the eyes of a young girl named Scout Finch. It remains a critical work of American literature, reflecting the social issues of the Deep South during the 1930s. Lee's compelling narrative and character development highlight the complexities of human nature and the importance of empathy and understanding.