Url https://edisondigital.rutgers.edu/document/QCB07116 Resource class dctype:Text Title [QCB07116], Legal Testimony, Edward Hibberd Johnson, May 14th, 1877 Creator Johnson, Edward Hibberd Subject Multiple telegraphy (duplex, quadruplex) Automatic telegraphy Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1877-05-14 Type Legal Testimony Identifier QCB07116 Source 9:739 Relation Automatic Telegraph Co Atlantic and Pacific Telegraph Co Rights Thomas Edison National Historical Park Date Created 1877-05-14 Has Version https://archive.org/details/edisonmicrofilm9/page/n749/mode/1up Archive.org Viewer, Microfilm Series Reel 9 Is Part Of QCB07-F Uri https://edisondigital.rutgers.edu/document/QCB07116 https://edisondigital.rutgers.edu/document/QCB07116 --