The book we found in Warren County at the Washington Public Library, because the local H.S was closed. We found the libray copied everything on Castner's to go through it when we got home, and we did come home with tons of paper.
The book is
By the Neck Until Dead by Frank Dale
I don't know where you could purchase it and I don't know when it was published. Sorry, Maybe if you go into the Warren,or Washington web site and put in Change Water you will find something on the murders.