Url https://edisondigital.rutgers.edu/document/D7903ZEL Resource class dctype:Text Title [D7903ZEL], Letter from Mackinnon (D.) & Co to Thomas Alva Edison, May 30th, 1879 Creator Mackinnon (D.) & Co Subject Metals and minerals Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1879-05-30 Type Letter Identifier D7903ZEL Source 49:251 Rights Thomas Edison National Historical Park Date Created 1879-05-30 Has Version https://archive.org/details/edisonmicrofilm49/page/n259/mode/1up Archive.org Viewer, Microfilm Series Reel 49 Is Part Of D7903-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/D7903ZEL https://edisondigital.rutgers.edu/document/D7903ZEL --