Subject
Sects books
2 free books about sects, free to read online. Chapter 1 of any book is free, no account needed.
The Book of Religions
Comprising the Views, Creeds, Sentiments, or Opinions, of All the Principal Religious Sects in the World, Particularly of All Christian Denominations in Europe and America, to Which are Added Church and Missionary Statistics, Together With Biographical Sketches
Modern Substitutes for Christianity