The book is available on microfiche from the LDS Church library in Salt Lake City. It must be ordered and used a LDS Church. The charge is small and it will remain at the the church in a permanent collection.I was able to find a copy of the book from a used dealer on e-Bay.
The book is a bit hard to follow since she deals with the "allied families" along with the main lines. I'd be happy to look up information for you.