Url https://edisondigital.rutgers.edu/document/X0980l Resource class dctype:Text Title [X0980l] Reminiscence, William Joseph Hammer, Undated Creator Hammer, William Joseph Subject Multiple telegraphy (duplex, quadruplex) Automatic telegraphy Telephone Electric pen and mimeograph Electric traction Electric light and power Incandescent lamp Electrical distribution system Ore milling and separation Rolls and crushers Cement Motion picture cameras Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Type Reminiscence Identifier X0980l Relation Gold and Stock Telegraph Co Davy, Humphry Draper, Henry Maxim, Hiram Stevens Swan, Joseph Wilson Faraday, Michael Farmer, Moses Gerrish Edison, Thomas Alva Sawyer, William Edward Rights NMAH Archives Center Is Part Of X0980-F Uri https://edisondigital.rutgers.edu/document/X0980l https://edisondigital.rutgers.edu/document/X0980l --