Black Friday has a long and varied history. Some business leaders used the first time in the 1950s to report the large number of sick staff after Thanksgiving, and thus gave a long weekend to rest.
Other comments suggested that much was a popular phrase in the 1960s, when the Philadelphia Police Department had a " shows the current traffic disaster at the time, as people were thrown out for Christmas.
A more common explanation is that in the last instance the balance sheet of revenue sources was written in red ink when there are holes and the result is black. Since then, Black Friday was born with the day of business wealth that was understood.
In the photograph (left) there were stores in Denver on November 25, 1967, a poster of Thanksgiving in 1954, a merchant plock in Danver on November 26, 1966. Photograph: Bloomberg graphics.