Derleth's Additions
August Derleth, Lovecraft's friend and literary executor, discouraged other Cthulhu Mythos writers from setting their stories in Lovecraft's New England. But he himself attempted to fill in the blanks of the setting, particularly in his posthumous "collaborations" with Lovecraft — Derleth's stories based on notes or ideas that Lovecraft left behind.
"The Lurker at the Threshold" is set in Billington's Wood, a fictional forest north of Arkham, while "Witch's Hollow" takes place in the titular valley in the hills to the west of the town. The title of "The Fisherman of Falcon Point" refers to a promontory on the Atlantic coast south of Innsmouth. "Wentworth's Day" and "The Horror from the Middle Span" take place in the area north of Dunwich, while "The Gable Window" concerns a house on the Aylesbury Pike.
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