Url https://edisondigital.rutgers.edu/document/NB263AAA Resource class dctype:Text Title [NB263AAA], Technical Note, Thomas Alva Edison, George Edwin Hart, July 6th, 1921 Creator Edison, Thomas Alva Subject Disc record and duplicating technology Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1921-07-06 Type Technical Note Identifier NB263AAA Source 241:1013 Rights Thomas Edison National Historical Park Date Created 1921-07-06 Has Version https://archive.org/details/edisonmicrofilm241/page/n1024/mode/1up Archive.org Viewer, Microfilm Series Reel 241 Is Part Of NB263-F Recipient Hart, George Edwin Uri https://edisondigital.rutgers.edu/document/NB263AAA https://edisondigital.rutgers.edu/document/NB263AAA --