Had invented a way to replace the cylinder surface by the plane with a metallic plate, which receives the impression, making it easy to multiply the plate by galvanoplastics or electrotype. [TAE replies: "It would be good thing if he would work it up"]

Bolderman, H J

Edison, Thomas Alva

1883-04-13

1880-1889

Letter

Disc record and duplicating technology

D8305E

D8305

[D8305E], Letter from H J Bolderman to Thomas Alva Edison, April 13th, 1883

64:402

Thomas Edison National Historical Park

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University