Books Pertaining to InterSpirituality

This discussion group is focussed on books that pertain to interspirituality, directly or indirectly, that are published or in the process of being written.

If you have written or have read a book that has a tangible interspiritual theme or connection relating to the categories in this discussion forum, please tell us about it.  Please keep your descriptions to about 150 words.  Then add a link to the relevant website and/or a PDF attachment with a longer review.