Url https://edisondigital.rutgers.edu/document/NM028 Resource class dctype:Text Title [NM028] Technical Note, c. 1892 Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1892-00-00 Type Technical Note Identifier NM028 Source 105:521 Rights Thomas Edison National Historical Park Has Version https://archive.org/details/edisonmicrofilm105/page/n530/mode/1up Archive.org Viewer, Microfilm Series Reel 105 Is Part Of NM028-F Uri https://edisondigital.rutgers.edu/document/NM028 https://edisondigital.rutgers.edu/document/NM028 --