What is this book about?

Dahcotah: Life and Legends of the Sioux Around Fort Snelling is a collection of stories and observations about the Sioux (Dakota) people living near Fort Snelling in present-day Minnesota. The book is divided into two main parts: the first part describes the daily life, customs, and beliefs of the Sioux, while the second part presents a series of traditional legends and myths. Eastman's writing provides a detailed and sympathetic portrayal of Sioux culture, including their social organization, religious practices, and interactions with European Americans.