Url https://edisondigital.rutgers.edu/document/QCC02245 Resource class dctype:Text Title [QCC02245], Letter from George May Phelps to George Bartlett Prescott, July 1874 Creator Phelps, George May Subject Manufacturing Multiple telegraphy (duplex, quadruplex) Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1874-07-00 Type Letter Identifier QCC02245 Source 10:313 Rights Thomas Edison National Historical Park Has Version https://archive.org/details/edisonmicrofilm10/page/n322/mode/1up Archive.org Viewer, Microfilm Series Reel 10 Is Part Of QCC02-F Recipient Prescott, George Bartlett Uri https://edisondigital.rutgers.edu/document/QCC02245 https://edisondigital.rutgers.edu/document/QCC02245 --