6. Joseph Weil
Nicknamed the “Yellow Kid”, Joseph Weil worked with a network of other con men, including Billy Wall, Doc Meriwether, Bob Collins, William J, WInterbill, Romeo Simpson, Jim Porter and others. He is believed to have gained $8 million using various illegal methods. Weil served his sentence in the Atlanta Prison in early 1940’s and died in Chicago at the age of 100 in 1976.