This book is a key resource for identifying Congregational churches in Massachusetts which were gathered by 1805; their earliest clergy, Ruling Elders and Deacons; and their early records which were known to exist in 1970 when this book was written. Dr. Worthley did extensive research in churches across Massachusetts to create this inventory. He is a noted scholar of Congregationalism and was the former Executive Director and Librarian of the Congregational Library in Boston. a position he long held. I recommend this book highly for those doing research in this area. ( )