In “Motor-car Principles: The Gasoline Automobile,” Roger B. Whitman provides a thorough exploration of the mechanics, design, and operational principles of gasoline-powered vehicles. Employing a clear, didactic style complemented by detailed diagrams and illustrations, Whitman engages both lay readers and budding engineers. This work serves not only as an informative guide but also reflects the technological advancements of the early 20th century, when the automobile began to transform the American landscape and economy. Through a systematic examination of engine function, fuel systems, and drive dynamics, the book offers significant insights into the inner workings of gasoline automobiles, making it a vital resource for enthusiasts and professionals alike. Roger B. Whitman, an engineer and educator, possessed a profound understanding of automotive technology that greatly influenced his writing. His expertise, garnered through years of teaching and hands-on experience in the industry, allowed him to distill complex information into accessible language. Whitman'Äôs passion for engineering and education motivated him to demystify the automobile's intricacies during a formative period for motor transport, thus laying a foundation for future developments. This book is recommended for anyone seeking a comprehensive introduction to automotive engineering. Whether you are a student, a professional in the field, or simply an enthusiast eager to understand the gasoline automobile's mechanics, Whitman's work serves as an essential reference point in the exploration of motor-car technology.