Bibliography
- Ackerman, Kenneth D. The Gold Ring, Jim Fisk, Jay Gould, & Black Friday, 1869. New York: Dodd, Mead & Company, 1988.
- Calahan, Edward A. "The Evolution of the Stock Ticker." The Electrical World and Engineer XXXVII Jan. - June 1901.
- Dyer, Frank, Thomas Martin, and William Meadowcroft. Edison His Life and Inventions Vol. One. New York and London: Harper & Brothers Publishers, 1929.
- Fowler, WM. Worthington. Ten Years In Wall Street. Hartford, CT: Worthington, Dustin & Co., 1870.
- Israel, Paul. Edison A Life of Invention. New York: John Wiley & Sons, Inc., 1998.
- Israel, Paul. From Machine Shop to Industrial Laboratory, Telegraphy and the Changing Context of American Invention, 1830 to 1920. Baltimore and London: The Johns Hopkins University Press, 1992.
- Maver Jr., William. American Telegraphy and Encyclopedia of the Telegraph. Bradley, IL: Lindsay Publications Inc., 1997.
- Kennedy, Rankin, C.E. Electrical Installations Vol. V. London: The Caxton Publishing Co., 1903.
- The Papers of Thomas Edison, The Making of an Inventor, February 1847 - June 1873. Ed. Reese V. Jenkins, et al. Baltimore and London: The Johns Hopkins University Press, 1989.




