Url https://edisondigital.rutgers.edu/document/E1162AJ Resource class dctype:Text Title [E1162AJ], Letter from Henry B Clifford to William Horatio Mason, June 28th, 1911 Creator Clifford, Henry B Subject Metals and minerals Ore milling and separation Ore concentrate Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1911-06-28 Type Letter Identifier E1162AJ Source 250:154 Relation Edison, Thomas Alva Rights Thomas Edison National Historical Park Date Created 1911-06-28 Has Version https://archive.org/details/edisonmicrofilm250/page/n163/mode/1up Archive.org Viewer, Microfilm Series Reel 250 Is Part Of E1162-F Recipient Mason, William Horatio Uri https://edisondigital.rutgers.edu/document/E1162AJ https://edisondigital.rutgers.edu/document/E1162AJ --