Url https://edisondigital.rutgers.edu/document/X098A012 Resource class dctype:Text Title [X098A012], Letter from William Joseph Hammer to Thomas Alva Edison, 1881 Creator Hammer, William Joseph Subject Patent interference Expositions, demonstrations, lectures Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1881-00-00 Type Letter Identifier X098A012 Relation Exhibition. Paris International (1881) Force, Martin N Herrick, Albert Bledsoe Batchelor, Charles Siemens, Werner von Johnson, Edward Hibberd Rights NMAH Archives Center Is Part Of X098A-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/X098A012 https://edisondigital.rutgers.edu/document/X098A012 --