August Derleth, (1909 – 1971) American writer of historical fiction, science fiction and detective stories, and Ascended Fanboy of HP Lovecraft as well as Arthur Conan Doyle. Derleth is mainly credited with founding Arkham House, which published many of Lovecraft's stories in book form, (something Lovecraft himself had dreamed of, although it never really succeed in his lifetime) and popularizing the Cthulhu Mythos. For examples of the specific tropes used in his Lovecraftian stories, see the article for his novel The Trail of Cthulhu.