[D7719ZDR], Letter from Thomas Alva Edison to Thomas B A David, November 28th, 1877

Item

Abstract

Don't understand about one of David's men working carbon telephone -- what he means is solid disk of either plumbago or lampblack or gas retort carbon same as I have always used -- believes he has perfectly satisfactory telephone now

Recipient

Date

1877-11-28

Decade

1870-1879

Type

Identifier

D7719ZDR

Folder Set

D7719

Title

[D7719ZDR], Letter from Thomas Alva Edison to Thomas B A David, November 28th, 1877

Microfilm ID

14:1002

Publisher

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