From the New York Public Library, a stereoscope of the Fireman’s Parade on Labor Day, 1887 in Union Square. The first Labor Day celebration in New York took place in the square 5 years earlier when a parade of more than 10,000 workers marched up Broadway and past a reviewing stand in Union Square. Not only is it the last day you can tastefully wear white or seersucker (but we don’t care), but Labor Day gives us occasion to honor the contributions to American labor rights and culture by slaves, indentured servants, union activists, women in the workplace, migrant workers and everybody who’s driven a nail into our tallest buildings and soundest bungalows. Labor Day in stereoscope aptly reminds us of the many versions of truth, justice and liberty (and eight hours for what they will) inherent in our national, and now multi-national, dialogue about labor. Remember not to step on anyone’s head on the way up, and always remember where you come from. And enjoy your weekend, courtesy of the labor movement.