If you cannot find a copy of A Face in the Rock at your local bookstore and they are unable to order it for you then use the link below to purchase it at Amazon.com. They have a paperback version available for $16.95. A Face in the Rock - Loren Graham
I have not yet checked at our local bookstore, Lowry's Books & More, but I know that if it is not in stock Tom Lowry can easily order it for me and have it in a matter of days. I did notice that it is not in their online store so it most likely is not in stock there.
I am quite intrigued by this book after finding out about the possibility of it being made into a movie. It seems to be a rather sad and yet compelling story of the passing of the Ojibwe's nation and culture. Of course, I read everything I can get my hands on that involves Michigan history so it was a no-brainer that this would interest me.