Url https://edisondigital.rutgers.edu/document/MBLB2010 Resource class dctype:Text Title [MBLB2010], Letter from Charles Batchelor to Robert Treat Spice, July 28th, 1878 Creator Batchelor, Charles Subject Light and optics Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1878-07-28 Type Letter Identifier MBLB2010 Source 93:224 Rights Thomas Edison National Historical Park Date Created 1878-07-28 Has Version https://archive.org/details/edisonmicrofilm93/page/n232/mode/1up Archive.org Viewer, Microfilm Series Reel 93 Is Part Of MBLB2-F Recipient Spice, Robert Treat Uri https://edisondigital.rutgers.edu/document/MBLB2010 https://edisondigital.rutgers.edu/document/MBLB2010 --