Thomas Edison and his early phonograph. Cropped from Library of Congress copy.
Brady-Handy Photograph Collection (Library of Congress) - http://hdl.loc.gov/loc.pnp/cwpbh.04044
circa 1877 (probably 18 April 1878, based on the extremely similar photo [1])
Levin C. Handy (per http://hdl.loc.gov/loc.pnp/cwpbh.04326)
PD
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