Url https://edisondigital.rutgers.edu/document/D7940M Resource class dctype:Text Title [D7940M], Letter from Theodore Puskas to Thomas Alva Edison, April 7th, 1879 Creator Puskas, Theodore Subject Carbon, coal, glass, ceramics Telephone Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1879-04-07 Type Letter Identifier D7940M Source 52:266 Relation Bailey, Joshua Franklin Gower, Frederick Allen Gouraud, George Edward Academie des Sciences Fleury, A L Rights Thomas Edison National Historical Park Date Created 1879-04-07 Has Version https://archive.org/details/edisonmicrofilm52/page/n275/mode/1up Archive.org Viewer, Microfilm Series Reel 52 Is Part Of D7940-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/D7940M https://edisondigital.rutgers.edu/document/D7940M --