[D7840ZBV], Letter from L A Ludwig to Stockton L Griffin, August 24th, 1878

Item

Abstract

Wants carbon button -- made microphone by using battery carbon but doesn't transmit voice except as tone and wants to see what will happen with button

Author

Date

1878-08-24

Decade

1870-1879

Type

Identifier

D7840ZBV

Folder Set

D7840

Title

[D7840ZBV], Letter from L A Ludwig to Stockton L Griffin, August 24th, 1878

Microfilm ID

19:900

Publisher

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