-
(AP Images)
-
-
The railroad ran between Port Huron and Detroit, Michigan.
-
The Western Union Telegraph Company is in Boston, Massachusetts.
-
-
-
The phonograph is a primitive instrument in which sound vibrations were transferred by a steel stylus to a cyliner wrapped in tin foil. (AP Images)
-
-
(AP Images)
-
The Edison Electric Illuminating Company evolved into the present-day Consolidated Edison Company. (AP Images)
-
It supplied power to 400 incandescent lamps owned by 85 customers. (AP Images)
-
(AP Images)
-
-
-
(AP Images)
-
He contributed many valuable discoveries to the war effort.
-
-
(AP Images)