Browse through the links at http://www.creative.net/~alang/lit/horror/hpl.sht
some very fascinating reading there...
Hailed as the 20th century Poe, H. P. Lovecraft wrote fantasy reminiscent of Dunsany and horror in the best tradition of Poe, Blackwood, and Machen. He singled out the best elements in the work of his literary masters and blended them into a unique style of his own -- a style that has, in turn, had many imitators and many more admirers. It was in a gray area between horror and science fiction that Lovecraft excelled and made his contribution, an area he called "cosmic horror."