One of the most famous American books is "To Kill a Mockingbird" by Harper Lee. This classic novel tells the story of a young girl named Scout Finch growing up in the racially charged South during the 1930s. The book explores themes of racism, justice, and morality, and has been praised for its powerful storytelling and unforgettable characters. "To Kill a Mockingbird" has become a beloved and widely read piece of American literature, and continues to be studied in schools and universities across the country.