Url https://edisondigital.rutgers.edu/document/PT032AIP2 Resource class dctype:Text Title [PT032AIP2], Letter from William Horatio Mason to Walter Seeley Mallory, April 21st, 1908 Creator Mason, William Horatio Subject Rolls and crushers Cement Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1908-04-21 Type Letter Identifier PT032AIP2 Source 185:588 Relation Edison Portland Cement Co Edison, Thomas Alva Rights Thomas Edison National Historical Park Date Created 1908-04-21 Has Version https://archive.org/details/edisonmicrofilm185/page/n600/mode/1up Archive.org Viewer, Microfilm Series Reel 185 Is Part Of PT032AIP-F Recipient Mallory, Walter Seeley Uri https://edisondigital.rutgers.edu/document/PT032AIP2 https://edisondigital.rutgers.edu/document/PT032AIP2 --