Url https://edisondigital.rutgers.edu/document/D7931C Resource class dctype:Text Title [D7931C], Letter from Clarence J Blake to Thomas Alva Edison, April 30th, 1879 Creator Blake, Clarence J Subject Cylinder phonograph Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1879-04-30 Type Letter Identifier D7931C Source 51:671 Rights Thomas Edison National Historical Park Date Created 1879-04-30 Has Version https://archive.org/details/edisonmicrofilm51/page/n680/mode/1up Archive.org Viewer, Microfilm Series Reel 51 Is Part Of D7931-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/D7931C https://edisondigital.rutgers.edu/document/D7931C --