Url https://edisondigital.rutgers.edu/document/D7004B Resource class dctype:Text Title [D7004B], Letter from Marshall Lefferts to Thomas Alva Edison, October 7th, 1870 Creator Lefferts, Marshall Subject Contracts and other legal concerns Automatic telegraphy Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1870-10-07 Type Letter Identifier D7004B Source 12:137 Rights Thomas Edison National Historical Park Date Created 1870-10-07 Has Version https://archive.org/details/edisonmicrofilm12/page/n145/mode/1up Archive.org Viewer, Microfilm Series Reel 12 Is Part Of D7004-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/D7004B https://edisondigital.rutgers.edu/document/D7004B --