Url https://edisondigital.rutgers.edu/document/D7906ZBE Resource class dctype:Text Title [D7906ZBE], Letter from Journal of Otology, Clarence J Blake to Thomas Alva Edison, September 20th, 1879 Creator Journal of Otology Blake, Clarence J Subject Microphone and other acoustic devices Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1879-09-20 Type Letter Identifier D7906ZBE Source 49:729 Relation American Association for Advancement of Science Barker, George Frederick Rights Thomas Edison National Historical Park Date Created 1879-09-20 Has Version https://archive.org/details/edisonmicrofilm49/page/n737/mode/1up Archive.org Viewer, Microfilm Series Reel 49 Is Part Of D7906-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/D7906ZBE https://edisondigital.rutgers.edu/document/D7906ZBE --