Volume two of Schulz and de Vienne's Separate Identity has been out for almost two years. Some who would have purchased it were put off by the cost. The cost of a print copy is going up, sadly. However, it is now available as an ebook for less than half the cost of a print copy. Ebook is $20.50. It is only available from lulu.com
I'm partial to this book because my grand uncle and mom wrote it. So, yes, this is one of those "shameless plugs."