Commercial telegraph service inaugurated in Washington, D.C.

Samuel Morse, in the Supreme Court Room at the United States Capitol, sent the first commercial telegraph message of his new service. It went  to Alfred Vail at the Mount Clare Station of the Baltimore and Ohio Railroad in Baltimore, who responded instantly. The message was a phrase from the Old Testament, Judges 23:23, "What hath God wrought." (By John Osborne)
Source Citation
Joseph Nathan Kane, ed., Famous First Facts (New York: H.W. Wilson Company, 1981), 635.
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