Url,"Resource class",Title,Creator,Subject,Description,Publisher,Date,Type,Format,Identifier,Source,Relation,Rights,"Alternative Title","Date Created","Date Issued","Has Version","Is Part Of","Has Format","Temporal Coverage","Date Accepted","Bibliographic Citation",Recipient,Uri https://edisondigital.rutgers.edu/document/D7801B7A,dctype:Text,"[D7801B7A], Letter from Hector Orr to Thomas Alva Edison, June 6th, 1878","Orr, Hector","Microphone and other acoustic devices",,"Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University",1878-06-06,Letter,,D7801B7A,15:120,,"Thomas Edison National Historical Park",,1878-06-06,,"https://archive.org/details/edisonmicrofilm15/page/n128/mode/1up Archive.org Viewer, Microfilm Series Reel 15",D7801-F,,,,,"Edison, Thomas Alva","https://edisondigital.rutgers.edu/document/D7801B7A https://edisondigital.rutgers.edu/document/D7801B7A"