Electro magnetic telegraph. Communication from the Secretary of the Treasury, transmitting the report of Professor Morse, announcing the completion of the electromagnetic telegraph between the cities of Washington and Baltimore.

Telegraph wires in the District of Columbia.
Published: (1905)

Taxation of telegraph companies in the District of Columbia.
Published: (1910)

Telegraph wires in the District of Columbia.
Published: (1904)

[Memorial of Professor Page on electro-magnetic power for navigation and locomotion.].
Published: (1849)

Magnetic telegraph. Letter from the Secretary of the Treasury, transmitting a letter from Professor Morse, relative to the magnetic telegraph.
Published: (1844)

Removal of overhead telegraph and telephone wires, etc.
Published: (1902)

Description of the American electro magnetic telegraph : now in operation between the cities of Washington and Baltimore /
by: Vail, Alfred, 1807-1859
Published: (1845)

The American electro magnetic telegraph : with the reports of Congress, and a description of all telegraphs known, employing electricity or galvanism /
by: Vail, Alfred, 1807-1859
Published: (1845)

[Memorial of Magnetic Telegraph Company and New England Union Telegraph Company against monopoly; also memorial of American Telegraph Company, in answer thereto; and a further memorial of Magnetic and New England Telegraph Company, by way of reply.].
Published: (1858)

The electro-magnetic telegraph : A defence against the injurious deductions drawn from the deposition of Prof. Joseph Henry /
by: Morse, Samuel Finley Breese, 1791-1872
Published: (1858)

Tax on gross earnings of telegraph companies in the District of Columbia.
Published: (1910)

Memorial of the American Telegraph Company, in answer to the memorial of the Magnetic Telegraph Company and the New England Union Telegraph Company, and remonstrating against the prayer of their memorial being granted.
Published: (1858)

Electro-magnetic ore separation /
by: Gunther, Charles Godfrey, 1880-1929
Published: (1909)

Memorial of E. Gonon, praying the adoption of a system of telegraphs to be established between the cities of Washington and New York.
Published: (1841)

The American electro magnetic telegraph : with the reports of Congress, and a description of all telegraphs known, employing electricity or galvanism : illustrated by eighty-one wood engravings /
by: Vail, Alfred, 1807-1859
Published: (1847)

The electro-magnetic telegraph : with an historical account of its rise, progress, and present condition : also, practical suggestions in regard to insulation, and protection from the effects of lightning : together with an appendix, containing several important telegraphic decisions and laws /
by: Turnbull, Laurence, 1821-1900
Published: (1853)

[Annual report of superintendent of telegraph and telephone service in District of Columbia, 1888.].
Published: (1888)

Advanced magnetism and electromagnetism.
by: Schure, Alexander, 1920-
Published: (1959)

The electro magnetic telegraph : with an historical account of its rise, progress, and present condition, also, practical suggestions in regard to insulation, and protection from the effects of lightning, together with an appendix, containing several important telegraphic decisions and laws / cby Laurence Turnbull.
by: Turnbull, Laurence, 1821-1900
Published: (1853)

Memorial of the Magnetic Telegraph Company and of the New England Union Telegraph Company, praying the enactment of a law which will prevent combinations between citizens or companies in the United States and monopolists or companies out of the United States for the purpose of oppressing telegraph companies and monopolizing the business of telegraphing in the United States, and will enable all telegraph lines in the United States to form connexions with all telegraph lines approaching their borders on terms of perfect equality.
Published: (1858)

Magnetic telegraph from Baltimore to New York.
Published: (1845)

Magnetic and electromagnetic shielding /
by: Rikitake, Tsuneji, 1921-
Published: (1987)

Baltimore and Washington Transit Company.
Published: (1907)

Baltimore & Washington Transit Co.
Published: (1916)

Baltimore and Washington Transit Company.
Published: (1907)

Baltimore & Washington Transit Co.
Published: (1916)

Baltimore and Washington Transit Company.
Published: (1909)

Baltimore & Washington Transit Co., of Maryland.
Published: (1916)

Baltimore and Washington Transit Company, of Maryland.
Published: (1907)

Baltimore & Washington Transit Co. of Maryland.
Published: (1911)

Baltimore & Washington Transit Co. of Maryland.
Published: (1911)

Baltimore and Washington Transit Company of Maryland.
Published: (1909)

Baltimore and Washington Transit Company of Maryland.
Published: (1907)

Memorial of J. H. Pulte, proposing a plan for extending the magnetic telegraph around the globe.
Published: (1849)

Articles of association and charter from the state of Maryland of the Magnetic Telegraph Company : together with the office regulations and the minutes of the meetings of stockholders and board of directors.
Published: (1847)

Baltimore and Washington Transit Company.
Published: (1907)