Some of Robert E. Howard's horror stories include 'Pigeons from Hell' and 'The Black Stone'.
Robert E. Howard's horror stories like 'Worms of the Earth' and 'The Horror from the Mound' are well-known. His works often combine elements of the supernatural and dark themes.
A few of Robert E. Howard's notable horror stories are 'The Valley of the Worm' and 'The Fire of Asshurbanipal'. His horror tales are characterized by vivid descriptions and intense atmospheres.