Not sure this will help but I have a copy of The Ethical Slut that's no longer needed so if anyone wants I can forward it to them. It was a good read but I found it didn't really have what I was looking for in our situation. Most of the books I've found useful are general relationship books rather than poly specific.
Me: Late 30s pansexual poly.
DH: My husband of 19 yrs and father of 3 teen girls.
DC: LDR of +4 year