Bibliography
- P. Israel, Edison: A Life of Invention (New York: John Wiley & Sons, 1998).
- G. Prochnik, “I'm Thinking. Please. Be Quiet,” New York Times (August 25, 2013) SR4.
- J. Sterne, The Audible Past: Cultural Origins of Sound Reproduction (Durham, N.C. Duke University Press, 2003).