Url https://edisondigital.rutgers.edu/document/X012G1BP Resource class dctype:Text Title [X012G1BP], Letter from Thomas Augustus Watson to Gardiner Greene Hubbard, April 20th, 1878 Creator Watson, Thomas Augustus Subject TAE personality and character Telephone Microphone and other acoustic devices Cylinder phonograph Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1878-04-20 Type Letter Identifier X012G1BP Relation Edison, Thomas Alva Rights AT&T Archives and History Center Date Created 1878-04-20 Is Part Of X012G1-F Recipient Hubbard, Gardiner Greene Uri https://edisondigital.rutgers.edu/document/X012G1BP https://edisondigital.rutgers.edu/document/X012G1BP --