Can Such Things Be? is a collection of short stories by Ambrose Bierce, whose first edition appeared in 1893. It is notable in the Yellow Mythos for the stories An Inhabitant of Carcosa, in which the city of Carcosa is first mentioned in a published work, and Haita the Shepherd, in which Hastur is first mentioned in a published work (note, these two stories first appeared together in Tales of Soldiers and Civilians). Further, Hali, a philosopher, is referenced in a quote at the beginning of the story The Death of Halpin Frayser and as well as in An Inhabitant of Carcosa.