IN the upper left: The How and Why of Mechanical Movements. 297 pages. Hardback. Engines, pistons, gyroscopes, etc. How and why they work. Illustrated. $6. Upper right: The Illustrated Encyclopedia of Railway Locomotives. 258 pages. Hardback. Worldwide trains organized by wheel configurations. Illustrated. Neat book. Slight musty smell. $10. Lower left: Prisons and Hospitals/The photographic History of the Civil War. Hardback. 348 pages. Book 7 of a 10 volume set. 1957. Illustrated. NO insulators that I could see...$4. Lower in Center: The Modern Diesel. Hardback. 268 pages. Diesel engines for boats, subs, trains, etc. Illustrated. $3. Lower right: A Treasury of Railroad Folklore. Hardback. 530 pages. A goldmine of folk tales, etc from railroading. Neat book. $5. A plus postage.