The Hashish Eater -or- The Apocalypse of Evil – The epic poem in blank verse that brought Clark Ashton Smith fame and led to his acquaintance with H.P. Lovecraft.
The Horrors of Mars – Four stories with two alternate versions about the horrors to be found on Mars, the Red Planet, by Clark Ashton Smith.
Roverton, also known as the Captain Volmar stories, are two novelettes of the spacefarer James Roverton and his encounters with alien plants, animals, and intelligent beings. Clark Ashton Smith writes of the utter alienness of alien worlds.
Poseidonis – Five stories concerning the end of the civilization of Atlantis, a land of powerful wizards yet not powerful enough to stave off the death of that once mighty realm. Poseidonis is the last remnant of the lost continent.
The City of Singing Flame by Clark Ashton Smith – two stories of adventure into parallel universes. Despite its weird beauty, and its function as a portal to the Inner Dimension, the Singing Flame of Ydmos must be destroyed.