 And sure enough, Mumbler would continue to produce these ghostly photographs, and the other photographers just didn't know what he was doing or how he was making this possible. So he continued doing this for years and obviously became very popular with making a good living at it. P.T. Barnum was one of the people who came out against him. He was, of course, known for having what he would call a humbug, different things that were not real, but he would also be more, you know, he would claim that