This book is the only one that has more than a couple paragraphs about Maine's great fire of 1825 that burned nearly the entirety of the Piscataquis River Valley watershed. Furthermore, it is the only publication of any form that uses existing information to create a possible map of its boundary lines. The fire influenced the nature of logging in the watershed for over the next 100 years. Each chapter is an accounting of the logging, 1800-1950, on the main river and the tributaries of the watershed.