Url https://edisondigital.rutgers.edu/document/X120CAA Resource class dctype:Text Title [X120CAA], Letter from Thomas Alva Edison to Frank Julian Sprague, May 26th, 1878 Creator Edison, Thomas Alva Subject Patents Telephone Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1878-05-26 Type Letter Identifier X120CAA Relation University of Pennsylvania Western Union Barker, George Frederick Rights The New York Public Library, Astor, Lenox, and Tilden Foundations Date Created 1878-05-26 Is Part Of X120C-F Recipient Sprague, Frank Julian Uri https://edisondigital.rutgers.edu/document/X120CAA https://edisondigital.rutgers.edu/document/X120CAA --