One of the classic texts on this has always been CONTACT MIND READING EXPANDED - appearing in 1945. This has now been republished by Trickshop.com as a downloadable eBook. This book takes the reader through all he/she needs to know about this obscure art form. From Chapter 1:
Probably because successful performance is entirely dependant on extremely
subtle principles, the general run of magicians seem to make no attempt to
incorporate it their repertoires. Yet it is not nearly as difficult as it
seems...contact mindreading is an extremely fruitful endeavor magically.
Buy this book HERE