The first comprehensive treatment of North American rodents of conservation concern. This action plan summarizes the rodent fauna of North America and provides available information on every rodent taxon that has been considered to be of conservation concern by state, provincial and private conservation agencies and regional experts. It is hoped that the survey provided in this action plan will serve as a common ground for all these parties in drawing up conservation strategies for rodents.

A thorough history of the Indian trail taken by Lewis & Clark from the headwaters of the Clearwater River to the Columbia, which later became a trail to the gold fields of Montana.