"Wild Animals of Yellowstone National Park" by Harold J. Brodrick is a scientific publication written in the mid-20th century. This work provides a detailed overview of the mammals commonly seen in Yellowstone National Park, supported by illustrations and general information about their behavior and habitats. The focus is on educating park visitors about the variety of wildlife within this iconic national park. The opening of the book sets the stage for understanding the significance of Yellowstone's wildlife alongside its natural wonders. Brodrick introduces the context of the park's establishment, emphasizing the need to preserve not just its scenic landscapes but also its diverse animal life, which had been declining due to habitat loss and hunting. The preface outlines the purpose of the handbook—to inform visitors about the mammals they may encounter in the park, including their characteristics, habitats, and behaviors. This introduction serves as a foundation for subsequent chapters, which will detail specific species, beginning with the Pronghorn and Bison, highlighting the importance of wildlife preservation in Yellowstone. (This is an automatically generated summary.)