Url https://edisondigital.rutgers.edu/document/Z100FN Resource class dctype:Text Title [Z100FN], Letter from Thomas Alva Edison to Richard S Culley, April 3rd, 1876 Creator Edison, Thomas Alva Subject Patents Multiple telegraphy (duplex, quadruplex) Automatic telegraphy Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1876-04-03 Type Letter Identifier Z100FN Relation Scudamore, Frank Ives Rights BT Archives Date Created 1876-04-03 Is Part Of Z100-F Recipient Culley, Richard S Uri https://edisondigital.rutgers.edu/document/Z100FN https://edisondigital.rutgers.edu/document/Z100FN --