Stories "The Cats of Ulthar," "The Beast in the Cave," and "The Terrible Old Man" all by H.P. Lovecraft [public domain].
Squishy noises from http://opengameart.org/content/8-wet-squish-slurp-impacts [CC0]
Typewriter audio: ddohler http://www.freesound.org/people/ddohler/sounds/9098/ [CC 3.0]