Url https://edisondigital.rutgers.edu/document/NV15 Resource class dctype:Text Title [NV15] Technical Note, 1875-1877 Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1875-1877 Type Technical Note Identifier NV15 Source 4:331 Rights Thomas Edison National Historical Park Has Version https://archive.org/details/edisonmicrofilm4/page/n339/mode/1up Archive.org Viewer, Microfilm Series Reel 4 Is Part Of NV15-F Uri https://edisondigital.rutgers.edu/document/NV15 https://edisondigital.rutgers.edu/document/NV15 --