Another fine, boldly illustrated concept book from Gibbons. The author's familiar illustrations in bright, primary colors with crisp, geometric lines will appeal to young eyes, particularly with their neat border of white ``track.'' The text is spare and accurate in its description of different kinds of trains, past and present, and how they work. The final page gives signs and signals related to trains. Gibbons has a knack for discerning what's important to young readers and presenting it in a manner of interest to them. The cover illustration of a huge engine looming high above heightens the sense of a child's perspective in the illustrations. Trains , with its colorful appeal and accurate content, is an example of how information can best be presented to young readers. Connie Tyrrell Burns, Mahoney Middle School, South Portland, Maine Copyright 1987 Reed Business Information, Inc.