Url https://edisondigital.rutgers.edu/document/D8639R Resource class dctype:Text Title [D8639R], Letter from S K Dingle to Eugene Crowell, June 9th, 1886 Creator Dingle, S K Subject Research and development Phonoplex and railroad telegraphy Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1886-06-09 Type Letter Identifier D8639R Source 79:1157 Relation Rudd, C H Rights Thomas Edison National Historical Park Date Created 1886-06-09 Has Version https://archive.org/details/edisonmicrofilm79/page/n1166/mode/1up Archive.org Viewer, Microfilm Series Reel 79 Is Part Of D8639-F Recipient Crowell, Eugene Uri https://edisondigital.rutgers.edu/document/D8639R https://edisondigital.rutgers.edu/document/D8639R --