This 28-page court record is from the case of Thomas A. Edison and George Harrington v. Western Union Telegraph Company; George B. Prescott; the Honorable R.H. Duell, Commissioner of Patents, and the Honorable Z. Chandler, Secretary of the Interior. It can be found at the Edison National Historical Park in a volume entitled "Telegraph Law Cases -- Miscellaneous," which is the fifth of five volumes of litigation records involving rights and title to Edison patent applications pertaining to duplex and quadruplex telegraphy.

Courtesy of Thomas Edison National Historical Park.