This link will take you to a photo essay in The New York Times that is part of their coverage of the centennial of the Triangle Shirt Factory fire. Many of the photos are contemporary, and some are in color (although they look like they may have been hand-tinted). In any case, they are a powerful reminder of why workers will always need to fight, simply to be treated like human beings.
I grew up thinking that such horrors were consigned to the history of a less enlightened era. Sadly, we are proving today that enlightenment is easy to throw away, once it has been corrupted by venality.