To Kill a Mockingbird, written by Harper Lee, is widely regarded as one of the greatest American novels of all time. The cover of this book has become iconic, featuring a simple yet powerful image of a mockingbird perched on a tree branch. The cover perfectly captures the essence of the story, which explores themes of racial injustice and the loss of innocence. It is a timeless and thought-provoking cover that continues to resonate with readers.