In “How to Select Cows or, The Guenon System Simplified, Explained, and Practically Applied,” Willis P. Hazard offers a meticulous exploration of bovine selection based on the Guenon system, renowned for its analytical approach to breeding. The book combines practical advice with theoretical insights, presented in an accessible manner that reflects the agricultural discourse of the late 19th century. Hazard's work is an invaluable resource for farmers and animal breeders, emphasizing systematic observation, classification, and selection aimed at improving livestock's health and productivity. Willis P. Hazard, an influential figure in veterinary science and agricultural best practices, wrote this book during a period marked by a burgeoning interest in systematic farming techniques. His deep understanding of animal husbandry, combined with practical experience, informs his clear and pragmatic writing style. Hazard's insights were shaped by contemporary agricultural movements and his desire to demystify complex breeding principles, making them approachable for farmers of all backgrounds. This book is highly recommended for anyone involved in livestock management, veterinary science, or agricultural education. Hazard's clear, empirical approach to breeding not only aids practical application but also enriches readers' understanding of animal genetics, ensuring its relevance in both historical and modern contexts.