Description of the American Electro Magnetic Telegraph: now in operation between the Cities of Washington and Baltimre. Bound with: Johnson, A Brief and Simple Explanation of the Electro-magnetic Telegraph (1847) and Hubbard, The Proposed Changes in the Telegraphic System (1873)
Washington, D. C. J. and G.S. Gideon, 1845. Morse Code Vail, Alfred (1807-59). Description of the American electro magnetic telegraph: Now in operation between the cities of Washington and Baltimore. 24pp. Woodcut text illustrations. Washington: J. & G. S. Gideon, 1845. 221 x 140 mm. Bound with 2 other works..... More