Url https://edisondigital.rutgers.edu/document/MBN001022 Resource class dctype:Text Title [MBN001022], Technical Note, Charles Batchelor, April 1875 Creator Batchelor, Charles Subject Telegraph Miscellaneous electrical technologies Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1875-04-00 Type Technical Note Identifier MBN001022 Source 90:623 Rights Thomas Edison National Historical Park Has Version https://archive.org/details/edisonmicrofilm90/page/n633/mode/1up Archive.org Viewer, Microfilm Series Reel 90 Is Part Of MBN001-F Uri https://edisondigital.rutgers.edu/document/MBN001022 https://edisondigital.rutgers.edu/document/MBN001022 --