This is a gold-mine for the book and toy departments but not for libraries, because it is an excellent volume of easy-to-build paper models. The first section gives six models in push-out form to be used for decoration or identification purposes, these are on thick paper and the parts of the planes are in color. The second section is in black and white on thin, tough paper, here the boy is to cut out and make ten planes which will actually glide. Instructions are clear and sensible. The whole is approved by Air Youth, a division of the National Aeronautic Association. Have tried this on a boy of nine, who finds it hard to do neatly but the boy of twelve can just manage it well.