Url https://edisondigital.rutgers.edu/document/CJ621ABW Resource class dctype:Text Title [CJ621ABW], Letter from William Horatio Mason to Thomas Alva Edison, August 15th, 1912 Creator Mason, William Horatio Subject Tools and machinery Accidents, fires, explosions Ore exploration and mining Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1912-08-15 Type Letter Identifier CJ621ABW Source 204:445 Relation Mallory, Walter Seeley Rights Thomas Edison National Historical Park Date Created 1912-08-15 Has Version https://archive.org/details/edisonmicrofilm204/page/n454/mode/1up Archive.org Viewer, Microfilm Series Reel 204 Is Part Of CJ621-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/CJ621ABW https://edisondigital.rutgers.edu/document/CJ621ABW --