Which American author wrote "The Colour Out of Space" and "The Call of Cthulhu"?
Colour out of space (species):  It appeared in Lovecraft's short story "The Colour Out of Space" (1927). H. P. Lovecraft: Howard Phillips Lovecraft ( ; August 20, 1890 – March 15, 1937) was an American author who achieved posthumous fame through his influential works of horror fiction. H. P. Lovecraft:  Among his most celebrated tales are "The Call of Cthulhu" and "The Shadow over Innsmouth", both canonical to the Cthulhu Mythos.
Howard Phillips Lovecraft