April Derleth, daughter of Arkham House founder August Derleth and current president and CEO of the publishing house, has died at the age of 56.  No cause of death has been announced.  Arkham House was founded by August Derleth and Donald Wandrei to promote the works of H. P. Lovecraft and other Weird Tales authors, as well as author who wrote in a similar vein for other publications, including volumes by Ray Bradbury, Clark Ashton Smith, William Hope Hodgson, and Robert E. Howard.  Upon August Derleth’s death, Wandrei and then James Turner ran the publishing company.  When April Derleth became CEO, she tried to return to the company’s roots by publishing more weird fiction.  During her tenure, she published volumes by Nelson S. Bond, Hugh B. Cave’s autobiography Cave of a Thousand Tales,and  the anthology Arkham’s Masters of Horror, among other volumes.  Arkham House has temporarily suspended all sales and unfilled orders.