"The Therapeutic Perspective: Medical Practice, Knowledge, and Identity in America, 1820-1885" by John Harley Warner is a hardcover book published by Harvard University Press in 1986. This book delves into the historical and cultural aspects of medical practice, knowledge, and identity in America during the 19th century. With a focus on the development of therapeutic perspectives in the field of medicine, this book is a valuable resource for those interested in the history of medical practices and the social and cultural influences on healthcare in America during this time period.