This book contains primary sources that describe the early Quaker movement, help to explain some of the doctrines and their relationship with the larger society. This is a good collection, although I cannot judge how complete it is, given the size of the volume I assume it is fairly complete. There are a great deal of letters, tracts, treatises, and spiritual autobiographies pertaining to the Quaker movement in England until 1700 in the book. There is also an introduction to Quakerism as well. This is an extensive collection of primary sources and documents.