Url https://edisondigital.rutgers.edu/document/X012G1BR Resource class dctype:Text Title [X012G1BR], Letter from Clarence J Blake to Thomas Augustus Watson, April 30th, 1878 Creator Blake, Clarence J Subject Cylinder phonograph Sound and acoustics Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1878-04-30 Type Letter Identifier X012G1BR Rights AT&T Archives and History Center Date Created 1878-04-30 Is Part Of X012G1-F Recipient Watson, Thomas Augustus Uri https://edisondigital.rutgers.edu/document/X012G1BR https://edisondigital.rutgers.edu/document/X012G1BR --