"The Mammals of Washtenaw County, Michigan" by Norman Asa Wood is a detailed scientific study that documents the diversity and distribution of mammal species in Washtenaw County, Michigan. As part of the Occasional Papers of the Museum of Zoology, this work presents comprehensive research on the various mammals found in the region, including their habitats, behaviors, and ecological roles.Wood employs a combination of field observations, specimen collection, and literature review to compile a thorough checklist of the mammalian fauna in Washtenaw County. The publication includes detailed descriptions of each species, along with information on their geographic distribution and status within the county. Additionally, Wood addresses conservation issues and habitat changes that may impact local mammal populations, providing valuable insights into the challenges facing wildlife in the region.