Related collections include Someone in the Dark, 1941; Something Near, 1945; The Mask of Cthulhu, based on H. P. Lovecraft's Cthulhu concept, 1958; Not Long for this World, 1948; Mr. George and Other Odd Persons, 1963; Harrigan's File, posthumous collection, 1975; Dwellers in Darkness, posthumous collection, 1976.

While all these titles are related in that they are collections of Derleth's ghost and fantasy fiction, there is no clear development from one to the next and no particular organizing principle that binds any one collection together.

While all the stories in Lonesome Places find characters discovering the supernatural in a lonesome place, characters in every story could be said to "dwell in darkness" just as characters in each story in Dwellers in Darkness also make their discoveries in lonesome places.

Derleth's collaborations with H. P. Lovecraft and Mark Schorer should be mentioned here. During the summer of 1931, Mark Schorer and Derleth rented a cabin...