Url https://edisondigital.rutgers.edu/document/CJ640AAK Resource class dctype:Text Title [CJ640AAK], Letter from Thomas Alva Edison to Walter Seeley Mallory, William Horatio Mason, December 14th, 1903 Creator Edison, Thomas Alva Subject Competition and market structure Cement Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1903-12-14 Type Letter Identifier CJ640AAK Source 205:814 Relation Vulcanite Portland Cement Co Rights Thomas Edison National Historical Park Date Created 1903-12-14 Has Version https://archive.org/details/edisonmicrofilm205/page/n824/mode/1up Archive.org Viewer, Microfilm Series Reel 205 Is Part Of CJ640-F Recipient Mallory, Walter Seeley Mason, William Horatio Uri https://edisondigital.rutgers.edu/document/CJ640AAK https://edisondigital.rutgers.edu/document/CJ640AAK --