10/27/1877 Edison, Thomas Alva to Langley, Samuel Pierpont
(Tyndall, John; Batchelor, Charles; Thomson, William, (Lord Kelvin)) Tasimeter; Heat and thermodynamics
[D7702]  Document File Series -- 1877: (D-77-02) Edison, T.A. -- General
[D7702ZCW1; TAEM 162:1018]
Courtesy of Thomas Edison National Historical Park.