Signedunsigned
Inscribedwritten on card: (front in ink) a piece of the wire over which/passed the first practical/Telegraph Mess. / (reverse in pencil) Baltimore to Washington 1844
Historical AttributesThe first practical telegraph message was passed over this wire on July (?) 6, 1844.
Primary SourcesAlfred Vail, Description of the American Electro Magnetic Telegraph: Now in Operation Between the Cities of Washington and Baltimore (Washington, D.C.: J. & G. S. Gideon, 1845). In CHSI library: LIB.3014.
ProvenanceDonated by Stephen Vail to Harvard University on Dec. 24, 1924.