Rio Grande High-Side Gondolas from White River Productions is a must for railfans and modelers interested in narrow gauge rolling stock. In spite of the author's quote in the introduction as "a brief, incomplete history," this book is anything but. Dr. Rhine has chronicled these cars for decades and this is a detailed study. The book traces all the major classes of cars, from introduction to the railroad, through the many variants and permutations of the car type, to the end of their service lives. These cars formed the backbone of the Rio Grande's narrow gauge coal, mineral, and loose material transport fleet and led long and productive lives. With many examples still extant, including some in regular service as passenger cars on tourist and museum railroads, this informative books is a detailed look at Rio Grande High-Side Gondolas.