I found myself faced by names and terms that I had heard elsewhere in the most hideous of connections — Yuggoth, Great Cthulhu, Tsathoggua, Yog-Sothoth, R'lyeh, Nyarlathotep, Azathoth, Hastur, Yian, Leng, the Lake of Hali, Bethmoora, the Yellow Sign, L’mur-Kathulos, Bran, and the Magnum Innominandum .
Yellow River | Yellow Magic Orchestra | Yellow Emperor | yellow fever | Yellow Book | Georgia Tech Yellow Jackets football | Yellow Springs, Ohio | The Yellow Book | The King in Yellow | Medical sign | Yellow fever | The Sign of the Four | sign | British Sign Language | Big Yellow Taxi | Yellow Sea | Yellow | American Sign Language | The Sign of Four | sign language | Pound sign | Frankford Yellow Jackets | Yellow-throated Whistler | Yellow Springs | Yellow Book of Lecan | She Wore a Yellow Ribbon | Itsy Bitsy Teenie Weenie Yellow Polka Dot Bikini | Yellow-tailed Black Cockatoo | Yellow-naped Amazon | Yellow-legged Gull |
In Chambers' The King in Yellow (1895), a fin-de-siècle collection of horror stories, Hastur is the name of a potentially supernatural character (in "The Demoiselle D'Ys"), a place (in "The Repairer of Reputations"), and mentioned without explanation in "The Yellow Sign".
The symbol on the cover is the yellow sign from the book The King in Yellow.