The Dunwich Horror was written by H P Lovecraft in August 1928 and is considered one of the core tales in his Cthulhu mythos. There are several significant literary influences on the tale. The central premise – the sexual union of a ‘god’ or monster with a human woman – is taken directly from Arthur Machen’s The Great God Pan; Lovecraft actually alludes to the story at one point in his narrative. The use of bizarre footsteps to indicate the presence of an otherwise undetectable entity is borrowed from Algernon Blackwood’s The Wendigo. There are several other celebrated weird tales featuring invisible monsters Fitz-James O’Brien’s What Was It?; Guy de Maupassant’s The Horla (certain features of which had already been adapted for The Call of Cthulhu); Ambrose Bierce’s The Damned Thing – but they do not appear to have influenced the tale substantially. A less well-known story, Anthony M Rud’s Ooze, also deals with an invisible monster that eventually bursts forth from the house in which it is trapped; Lovecraft expressed great enthusiasm for the tale when he read it in the spring of 1923. The Dunwich Horror also stands out as being one of the few tales Lovecraft wrote wherein the heroes successfully defeat the antagonistic entity or monster of the story.
At the Mountains of Madness is a novella by horror writer H P Lovecraft, written in 1931 and first published in Astounding Stories. The story is a summation of Lovecraft’s lifelong fascination with the Antartic, beginning from the time when he had followed with avidity reports of the explorations of Scott, Amundsen and others in the early decades of the 20th century. The early parts of Lovecraft’s tale also clearly show the influence of Admiral Byrd’s expedition of 1928-30. The story details the events of a disastrous expedition to the Antarctic continent in September 1930 and what was found there by a group of explorers led by the narrator, Dr William Dyer of the fictional Miskatonic University. Throughout the story, Dyer details a series of previously untold events in the hope of deterring another group of explorers who wish to return to the continent. The novella’s title is derived from a line in The Hashish Man, a short story by fantasy writer Edward Plunkett, Lord Dunsany: “And we came at last to those ivory hills that are named the Mountains of Madness…”.