My First Book of Trains by Kristina A. Holzweiss, From steam locomotives and diesel engines to electric railcars, inquisitive kids will learn all about trains and the important jobs they do! Filled with colorful pictures, and amazing train trivia, kids will love reading along, and expand their knowledge of science and engineering along the way. Paperback, 72 pages. Recommended for ages 3 to 5 years old.