Url https://edisondigital.rutgers.edu/document/NP081B Resource class dctype:Text Title [NP081B], Technical Note, Thomas Alva Edison, August 10th, 1909 Creator Edison, Thomas Alva Subject Cylinder phonograph Sound and acoustics Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1909-08-10 Type Technical Note Identifier NP081B Source 178:524 Rights Thomas Edison National Historical Park Date Created 1909-08-10 Has Version https://archive.org/details/edisonmicrofilm178/page/n547/mode/1up Archive.org Viewer, Microfilm Series Reel 178 Is Part Of NP081-F Uri https://edisondigital.rutgers.edu/document/NP081B https://edisondigital.rutgers.edu/document/NP081B --