It's one of the most iconic photographs of all time, 11 construction workers having lunch on a steel beam 840 feet above New York City, but the men in the photo and the photographer who captured them remain a mystery.
Time magazine as part of their ongoing series on the 100 most influential images of all time explores the story behind the image, the construction workers who risked their lifes to built New York City and the photographers who dared the heights to capture this moment in history.