Perfected phonograph on which staff and Thomas Edison had marked 48 consecutive hours.  Photo taken at 6 AM. Thomas Edison seated in center with Fred Ott at right and Col. George Gouraud at left. Standing (left to right) are W.K.L. Dickson, Charles Batchelor, Theodore Wangemann, John Ott, Charles Brown.
<ul><li>Keywords: thomas edison; w.k.l. dickson; employees; fred ott; john ott; theodor wangemann; charles batchelor; phonograph; west orange; laboratory complex; building 5; building 5 exterior; courtyard; Edison; Thomas A.; (EDIS Historical Photo Series Name)</li></ul>
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Unknown author<span style="display: none;">Unknown author</span></div>
circa 1892 <div style="display: none;">date QS:P571,+1892-00-00T00:00:00Z/9,P1480,Q5727902</div>
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