How's progress on system for exchange switches & signals? {TAE: will have system set up here by June 8th]. What about patent to cover Blake transmitter? [TAE: used Blake Trnas as model its in patent ofs]; Electric machine? [TAE: We are making our 30 machines; did not make your six as recd no orders]. TAE marg: "you asked if I could get around the Brooks Cable; I answer that I have got a system which I am going to use for my E Light that is infinitely better than Brooks.

Western Union

Twombly, Hamilton McKown

Edison, Thomas Alva

Blake, Francis, Jr

Brooks, David

1879-05-23

1870-1879

Letter

Telephone

Electric light and power

D7903ZEA

D7903

[D7903ZEA], Letter from Hamilton McKown Twombly, Western Union to Thomas Alva Edison, May 23rd, 1879

49:236

Thomas Edison National Historical Park

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