Url https://edisondigital.rutgers.edu/document/CJ409AAG Resource class dctype:Text Title [CJ409AAG], Letter from William Simpkin to Thomas Alva Edison, December 7th, 1907 Creator Simpkin, William Subject Electric battery Rolls and crushers Cement Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1907-12-07 Type Letter Identifier CJ409AAG Source 200:73 Relation Edison Cement Works (Stewartsville) Dunderland Ore Milling Area Lawrence, Joseph Rights Thomas Edison National Historical Park Date Created 1907-12-07 Has Version https://archive.org/details/edisonmicrofilm200/page/n82/mode/1up Archive.org Viewer, Microfilm Series Reel 200 Is Part Of CJ409-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/CJ409AAG https://edisondigital.rutgers.edu/document/CJ409AAG --