Long wrote a number of early Cthulhu Mythos stories. These included "The Hounds of Tindalos" (the first Mythos story written by anyone other than Lovecraft), "The Horror from the Hills" (which introduced the elephantine Great Old One Chaugnar Faugn to the Mythos), and "The Space-Eaters" (featuring a fictionalized HPL as its main character). A number of other works by Long can be considered as falling within the Cthulhu Mythos; these include "The Brain Eaters" and "The Malignant Invader", as well as such poems as "The Abominable Snowman" and "When Chaugnar Wakes". A later Mythos story, "Dark Awakening", appeared in "New Tales of the Cthulhu Mythos". The story betrays the influence of Long's pseudonymous romantic fiction, and the final paragraph was added by the editor at Long's suggestion.