The Dowse This... series of books are available for purchase at the website stores.lulu.com/DowseThis
We believe that these books would be a very powerful resource for creating a dowsing course and we would encourage dowsing teachers to include these books in course registration costs. We do offer special pricing for Bulk Purchases of the Dowse This... book series. Please contact us using the link on the contact page for more information.
We also have available a UV laminated card printed with the Yes/No charts which many teachers have found useful to provide to their dowsing students. These are also available in single or bulk purchases.