Url https://edisondigital.rutgers.edu/document/D8233ZDO Resource class dctype:Text Title [D8233ZDO], Letter from Charles T Porter to Thomas Alva Edison, August 19th, 1882 Creator Porter, Charles T Subject Engines, boilers, prime movers Escapement and governor mechanisms Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1882-08-19 Type Letter Identifier D8233ZDO Source 61:1126 Rights Thomas Edison National Historical Park Date Created 1882-08-19 Has Version https://archive.org/details/edisonmicrofilm61/page/n1135/mode/1up Archive.org Viewer, Microfilm Series Reel 61 Is Part Of D8233-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/D8233ZDO https://edisondigital.rutgers.edu/document/D8233ZDO --