Photographing dead children was a common practice years ago during Late Victorian & Early Edwardian times. Infant & child deaths were very common. For many children even a common sickness could be fatal. Grief stricken parents, as a memento, would pay a photographer to take a photo of the dead child's corpse, sometimes propping it up and painting the eyelids to make the deceased appear alive. The disturbing pictures here are only a few examples of this practice.
Source ; http://slightlywarped.com