Url https://edisondigital.rutgers.edu/document/CJ620ADU Resource class dctype:Text Title [CJ620ADU], Letter from Herman E Kiefer to Thomas Alva Edison, October 31st, 1911 Creator Kiefer, Herman E Subject Research and development Rolls and crushers Cement Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1911-10-31 Type Letter Identifier CJ620ADU Source 204:335 Relation Brady, Patrick Goldstein, Ignacy Rights Thomas Edison National Historical Park Date Created 1911-10-31 Has Version https://archive.org/details/edisonmicrofilm204/page/n344/mode/1up Archive.org Viewer, Microfilm Series Reel 204 Is Part Of CJ620-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/CJ620ADU https://edisondigital.rutgers.edu/document/CJ620ADU --