S. T. Joshi is a leading authority on H. P. Lovecraft, Ambrose Bierce, H. L. Mencken, and others. He has edited the definitive restored editions of the works of Lovecraft, several annotated editions of Bierce and Mencken, and has written such critical studies as The Modern Weird Tale. His biography H. P. Lovecraft: A Life won the Horror Writer Association's Stoker Award for best-non fiction.