US’s ‘worst serial killer’ murdered children on an industrial scale

The portraits are crudely drawn, as you might expect of a self-taught artist pushing 80. They are bright and primitive, but if you look at them more closely, they take on a shocking individuality.
Most of the subjects are African American, and the paintings reward the committed gaze by separating into distinct individuals. So individual that you could probably pick out any one of them in a police line-up.