Url https://edisondigital.rutgers.edu/document/D8020ZAQ Resource class dctype:Text Title [D8020ZAQ], Letter from George Clark to Thomas Alva Edison, January 25th, 1880 Creator Clark, George Subject Vacuum and glass bulb Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1880-01-25 Type Letter Identifier D8020ZAQ Source 53:623 Rights Thomas Edison National Historical Park Date Created 1880-01-25 Has Version https://archive.org/details/edisonmicrofilm53/page/n632/mode/1up Archive.org Viewer, Microfilm Series Reel 53 Is Part Of D8020-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/D8020ZAQ https://edisondigital.rutgers.edu/document/D8020ZAQ --