Question: What year was H.P. Lovecraft's novella "At the Mountains of Madness" published and was the first appearance of The Elder Things?
Sentence (from "At the Mountains of Madness"): At the Mountains of Madness is a novella by American author H. P. Lovecraft, written in February/March 1931 and rejected that year by "Weird Tales" editor Farnsworth Wright on the grounds of its length.
Relevant evidence: No