Robert E. Howard
Weird Tales launched in March of 1923 and the world was never the same again. While Pulp magazines had been around for some time Weird Tales was the first pulp magazine to specialize in super natural fiction. Weird Tales single handedly created the field of genre fiction as we know it. No longer did readers of Fantasy, Science Fiction, and Horror have to seek out single stories in otherwise mundane magazines now they had a magazine all of their own that published only what they were after.