The book is available at Gutenberg, Internet Archive, Sacred Texts, Hathi, and Google Books. There is also a free Kindle ebook, and a free audiobook at LibriVox.
Table of Contents
Chapter I: Fairy Tales and the Ancient Mythology
Chapter II: Classification of Welsh Fairies
Chapter III: Lake Fairies
Chapter IV: Mountain Fairies
Chapter V: Changelings
Chapter VI: Living with the Tylwyth Teg
Chapter VII: Fairy Music
Chapter VIII: Fairy Rings
Chapter IX: Piety as a Protection from the Seductions of the Tylwyth Teg
Chapter X: Fairy Money and Fairy Gifts in General
Chapter XI: Origins of Welsh Fairies