Book excerpt: "Robert LeMassena, one of America's foremost steam locomotive historians, takes another look at the D&RGW's standard gauge steam locomotives in the "big power" era and ending with the last of steam. he looks at the Rio Grande's profile, traffic, and geography, and how the railraod met its needs with some of the biggest, most powerful and most efficient non-articulated and articulated steam locomotives in American railroading. His concise, brief overview sheds new light on the motive power of this interesting and highly regarded Western railroad." --From back cover