02/21/1877 N.Y. City. Superior Court and Sedgwick, John -- Legal Decisions, Opinions, and Decrees
(Atlantic and Pacific Telegraph Co; Western Union; Pope, Franklin Leonard; Phelps, George May; Harrington, George; Prescott, George Bartlett; Edison, Thomas Alva; Orton, William) Multiple telegraphy (duplex, quadruplex)
[QCE01]  Litigation Series -- Telegraph Law Cases: Western Union v. Harrington & others:Affidavits and Injunction
[QCE01279A; TAEM 0:0]
Courtesy of Thomas Edison National Historical Park.