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Otto Olson (1858-1921) in front of his barber shop at 167 Milwaukee Avenue in Chicago, Illinois.
Person: Otto Olson (1858-1921) aka Ottan Olsen; aka Otto Olsen; Emigrated from Norway to Chicago, Illinois in 1877 and worked as a Barber (b. February 09, 1858, Vanse parish, Farsund, Vest-Agder, Norway - d. April 12, 1921, 465 Milwaukee Avenue, Chicago, Cook County, Illinois, USA)
Note: Otto is circled in this version of the image. The sign reads "Otto's Barber Shop".
Source: Hazel Wintrone (1916- ) in a screen capture from a video made of scanning her photo archive.