this one (with a 3.5 hour layover in the Calgary airport the book went pretty fast).
ANd oh do I wish I had found it a few years ago. The process Cawley outlines is one I think would work really well in this congregation to explore identity questions. But right now is not the right time to start the process.
SHe suggests an identity exercise that leads the congregation into describing the person that the congregation is. WHat is their gender, their age, their life-stage, their health etc. And all this she grounds in reminding the congregation that they are the body of Christ. I heartily recommend this book.