We list here a few titles (some old some new) which we think cover the main areas of interest in connection with leys and related phenomena. Many of these titles are classic works on earth mysteries and may seem a little dated now, in the light of recent research, and some may be out of print. There is over 20 years' worth of literature on the subject and a perusal through the essential titles will help put some perspective on the subject of leys and earth mysteries. This list is not exhaustive and will be updated from time to time.