With the advent of photography in the 19th century came the inevitable inclusion of the new process in the spiritualist movement.  William Mumler gained fame in the 1860s when he developed a photo that showed the ghostly image of his deceased cousin.  He then went to to great fame taking photos of people with their ghostly loved ones appearing in the frame.  While he was accused of fraud, he was never convicted and mediums and others still claim to be able to take spiritual photographs today.