A photographic Picture Book which very successfully carries over not only the story of paper making, both rag and wood pulp, but makes one conscious of the vast variety of uses to which paper is put. The text again takes the two children through the mill for making rag paper -- and the boy visits the lumber camp and the wood pulp mill. The photographs are better than the text. These books (Train, Fire Engine, Steampship, Airplane, Glass and Steel) have made a definite place for themselves.