09/07/1877 Batchelor, Charles, Adams, James, Kruesi, John and Edison, Thomas Alva -- Technical Notes and Drawings
(Carman, George E; Force, Martin N) Cylinder phonograph
[NV17]  Notebook Series -- Unbound Notebooks: Vol. 17 (1877-1878)
[NV17015; TAEM 4:886]
Courtesy of Thomas Edison National Historical Park.