Dark Things is an anthology of horror stories edited by American writer August Derleth. It was released in 1971 by Arkham House in an edition of 3,051 copies. It was Derleth's fourth anthology of previously unpublished stories released by Arkham House. A translation in Japanese has also been released.
Chalker, Jack L.; Mark Owings (1998). The Science-Fantasy Publishers: A Bibliographic History, 1923-1998. Westminster, MD and Baltimore: Mirage Press, Ltd. p. 48.