S. T. Joshi is a leading authority on H. P. Lovecraft, Ambrose Bierce, H. L. Mencken, and other writers, mostly in the realms of supernatural and fantasy fiction. He has edited corrected editions of the works of Lovecraft, several annotated editions of Bierce and Mencken, and has written such critical studies as The Weird Tale (1990) and The Modern Weird Tale (2001). His award-winning biography, H. P. Lovecraft: A Life (1996), has already become a collector's item. An expanded and updated version, I Am Providence: The Life and Times of H. P. Lovecraft, was published in 2 volumes in 2010.