"Two New Field Mice from the State of Michoacán, Mexico" is a research book by the famous American zoologist and naturalist Hall I. Raymond. In this issue, the author examines in detail two new species of mice that have been discovered in the state of Michoacán, Mexico. The book contains many visual materials, including photos, drawings and diagrams, which help readers gain a complete knowledge of these interesting rodents. For anyone interested in nature and biology, this book will be a source of interesting and useful information about the unique inhabitants of Michoacán.