THE TREADER OF THE DUST is a short story by American author Clark Ashton Smith, first published in Weird Tales in August 1935. The story introduces Quachil Uttaus and the Testament of Carnamagos to the Cthulhu Mythos, in relation to the tale of an unnamed character who obtains the forbidden tome from a sinister book-seller.

THE SEALED CASKET is a short story by Richard F. Searight, notable for introducing the Eltdown Shards, which would later be incorporated into the Cthulhu Mythos. The story was first published in the March 1935 edition of Weird Tales. "The icy fingers of a fetor that was old when the world was young reached for the life of the scheming Wesson Clark."

THE FESTIVAL is a Cthulhu Mythos story, written in 1923 and first published in the January 1925 issue of Weird Tales.
Set during the Yuletide season, the story follows an unnamed narrator who visits the ancient, coastal town of Kingsport, Massachusetts to partake in a mysterious family tradition known only as "the Festival."

THE TOMB FROM BEYOND is a Cthulhu Mythos short story by Carl Jacobi, first appearing in the November 1933 edition of Wonder Stories.

Long-lost civilizations may have possessed enigmatic abilities far beyond our understanding—forces that would render our science trivial by comparison. One day, through chance or intent, these powers might be uncovered once more. Whether they bring salvation or doom remains an open question.

IN THE WALLS OF ERYX was written in collaboration with Kenneth Sterling and first published in the January 1939 issue of Weird Tales.

Set on Venus, the story is presented as the recovered account of an Earthman employed by a mining company to harvest valuable crystals sought after for their energy properties. While exploring the Venusian jungle, the narrator becomes trapped inside an invisible maze-like structure—an alien construct built by the planet’s native, reptilian inhabitants.

THE MOON-BOG was first published in the June 1926 issue of Weird Tales.
The story is narrated by a friend of Denys Barry, an American who purchases an ancient estate near a bog in Ireland with the intent of draining the swamp and modernizing the land. Despite warnings from the superstitious locals about ancient legends tied to the bog, Barry proceeds with his project, disturbing the resting place of strange, long-forgotten beings.

AN INHABITANT OF CARCOSA is a short story by Ambrose Bierce, first published in the San Francisco News Letter and California Advertiser, Dec 25, 1886. The story, which tells of the wanderings of a man through a strange desert, introduces several elements to the Cthulhu Mythos.

HAITA THE SHEPHERD is a short story by Ambrose Bierce, first published in The Wave, Jan 24, 1891. The story, which tells of the naive worshipper of the god, Hastur, introduces several elements to the Cthulhu Mythos.

THE TOMB was first published in the The Vagrant no. 14 (March 1922). It is one of Lovecraft’s earliest stories and showcases his fascination with ancestral memory, Gothic atmosphere, and psychological horror.

The story is narrated by Jervas Dudley, a reclusive and imaginative young man with an obsession for a nearby, long-abandoned mausoleum belonging to the Hyde family. Drawn to the tomb by a strange sense of familiarity, Jervas becomes convinced he is connected to the Hydes by blood or spirit.

THE SHUNNED HOUSE was first published by The Recluse Press in 1928. Set in Lovecraft’s hometown of Providence, Rhode Island, the story follows the narrator and his uncle, Dr. Elihu Whipple, as they investigate a decaying old house on Benefit Street that has been plagued by generations of mysterious deaths, madness, and decay. Despite its long history of misfortune, the house’s true nature remains unknown—until the pair begin conducting a scientific investigation involving digging, observation, and direct confrontation with the supernatural.