Subtitled: A Guide for Enthusiasts. This comprehensive book on PRR hoppers is divided into pre-war, post-war, and secondary classes of hoppers. Each chapter details a particular class of hopper and includes key features, drawings, dimensional data, roster time lines, lettering information, prototype photos, and references. To aid modellers, the book features a wealth of model photos and suggestions for how to best represent that particular class. Sftbd., 8 1/2 x 11, 160 pgs., 203 b&w ill., 51 color.