On this Day Factola June 16, 1888   Edison's "Perfected Phonograph" is announced as completed and documented with photo of Edison and team. After 72 hours of continuous work Edison's team poses with their "Perfected Phonograph."   Fred Ott seated in left chair, W. K. L. Dickson standing behind him, Edison seated in middle in front of battery powered electric "Perfected Phonograph".         June 16 - On this Day Factola