Edgar Allan Poe's works hold significant value in American literature, often serving as a precursor to modern genres. He is known for his mastery of the short story, exemplifying themes of gothic horror and the psychological depth of human experience. Poe's poems and tales, such as “The Tell-Tale Heart” and “The Raven,” utilize symbolism and dark themes, influencing the development of the detective story and horror fiction. His exploration of madness and sentimentality paved the way for future authors and deeply embedded his legacy as a foundational figure in American literature.