The Immortals of Mercury
An explorer caught by the aboriginals of Mercury, who is tied to the back of a salamander-like monster that carries him away into the sun-ward deserts of the planet. Almost swooning with the insupportable heat, he sees the lifting of an artificial lid in the desert floor, and is rescued and carried into subterranean regions by strange beings who have achieved immortality by wearing clothes of a material that excludes the destructive cosmic rays.
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Clark Ashton Smith
Clark Ashton Smith (1893–1961) was a poet, sculptor, painter and author of fantasy, horror and science fiction short stories. It is for these stories, and his literary friendship with H. P. Lovecraft from 1922 until Lovecraft's death in 1937, that he is mostly remembered today. With Lovecraft and Robert E. Howard, also a friend and correspondent, Smith remains one of the most famous contributors to the pulp magazine Weird Tales.
Gernsback Science Fiction Series
A series of eighteen pamphlets published between 1929 and 1932 by Hugo Gernsback's Stellar Publishing Corporation, and seemingly edited by him. The pamphlets were either 24 or 28 pages long, and were published without cover illustration.
Gernsback Science Fiction Series consists of eighteen books — considered a complete series. The current recommended reading order for the series is provided below.

