The American electro magnetic telegraph: with the reports of Congress,

Mode of access: Internet.

On the motions of the earth and heavenly bodies, as explainable by electro-magnetic attraction and repulsion, and on the conception, growth, and decay of man, and cause and treatment of his diseases, as referable to galvanic action.

Mode of access: Internet.

The secret corresponding vocabulary; adapted for use to Morse's electro-magnetic telegraph ...

Mode of access: Internet.

The American electro magnetic telegraph: with the reports of Congress, and a description of all telegraphs known, employing electricity or galvanism.

Mode of access: Internet.