The paper models here are all finished models, but like their real aircraft ancestors they are continuously being improved. I developed a great interest in modeling airplanes from cardboard and paper when I was a kid during World War II. In those days cardboard models from cereal boxes or made from scratch was about all there was for toys. All other construction materials for toys were reserved for the war effort. Sense that time many refinements have been made in modeling. Models have evolved from card-board or paper to plastics; now with the high cost of plastic card modeling is gradually making a comeback.