These are a mystery. Three are drawn on mounted tissue paper and one is drawn directly on the artist board. They appear to be by crayon but might be gouache. The images measure 7″ x 9″. They are unsigned and have not been found in a DAC catalog. Several comic artists worked for DAC including Al Capp. The tissues are toned but it looks intentional as all are the same including the drawing directly on the artist board. I sure wish we could identify the artist which could drastically change the value. Buyer pays for shipping.