- E.T.A. Hoffmann. The Golden Pot and Other Tales. New York: Oxford World's Classics, 1992.
- Sigmund Freud. The Uncanny. New York: Penguin Books, 1919 (2003).
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Trezise, Thomas. "The Literary Fantastic." Princeton University, Princeton, NJ. 2014. Class Lecture.
- Michiel Scharpé. "A Trail of Disorientation: Blurred Boundaries in Der Sandmann." Image & Narrative - Online Magazine of the Visual Narrative . January 2009. July 20, 2015. <http://www.imageandnarrative.be/inarchive/uncanny/michielscharpe.htm>.
- Brian Gabriel, Demand Media. "What New Technologies Were Invented During the Late 1800s?." synonym. July 21, 2015. <http://classroom.synonym.com/new-technologies-were-invented-during-late-1800s-13745.html>.
- "1810 – Automaton Trumpet Player – Friedrich Kaufmann (German)." cyberneticzoo.com. July 21, 2015. <http://cyberneticzoo.com/robots/1810-automaton-trumpet-player-friedrich-kaufmann-german/>.
- "Eyes." University of Michigan. July 22, 2015. <http://www.umich.edu/~umfandsf/symbolismproject/symbolism.html/E/eyes.html>.
- "Symbolic Meaning of Eyes." July 22, 2015. <http://www.whats-your-sign.com/symbolic-meaning-of-eyes.html>.