Samuel Morse Publishes Attack on Joseph Henry




Date: January 1855


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Samuel F. B. Morse publishes "A Defence Against the Injurious Deductions Drawn from the Deposition of Prof. Joseph Henry" in the journal "Shaffner's Telegraph Companion." Henry had provided legal testimony countering Morse's claims to have discovered the scientific principles upon which the telegraph was based.


  • Henry, Joseph 1797-1878
  • Morse, Samuel Finley Breese 1791-1872
  • Shaffner's Telegraph Companion (Serial)


Chronology of Smithsonian History


  • Photograph of Morse taken by Mathew Brady Studio, c. 1860. National Portrait Gallery, image number NPG.2005.11.
  • Annual Report of the Smithsonian Institution for the year 1857, pp. 85-106.
  • Smithsonian Miscellaneous Collections, vol. 21, no. 356, Article III. "A Memorial of Joseph Henry", including Obsequies, Memorial Exercises at the Capitol and Memorial Proceedings of Societies. Washington: Smithsonian Institution, 1881. pp. 382-389.

Contact information

Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520,


January 1855


  • Telegraph
  • Controversies
  • Secretaries

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