Monsters have inhabited the depths of our minds and lived in the shady places of our imagination since we have known ourselves as human beings. Being an important aspect of the human culture, the monster symbolizes abstract anxieties and distress in human society. This research investigates and proposes a correlation between Howard Phillips Lovecraft's Cthulhu Mythos' monsters, Cthulhu, Nyarlathotep and Azathoth and the moment the U.S. was going through in the first quarter of the twentieth century. For such, five short stories taken from the Cthulhu Mythos, written/published from 1920 - 1927, ( "Nyarlathotep"; "The Other Gods"; "Azathoth"; "The Call of Cthulhu"; and "The Dream-Quest of Unknown Kadath"), are analyzed taken into consideration the historical context of this particular moment and a theoretical framework understanding the monster as a vessel for cultural/social memory.