TK Vail, Alfred, 1807-1859.
523 Description of the American electro Va magnetic telegraph: now in operation 1845 between the cities of Washington and
Baltimore. Illustrated by fourteen wood engravings. By Alfred Vail. = Washington : Printed by J. & G.S.
Gideon, 1845. 24 D> 2 G1). § 22s5 Gis Cover title. OCLC number: ocm03733532. 1..Telegraph--United States. I.T.
RG90-607845 a AACR2 MRG90-607845 TK5123.V31845 é 17496