This is a hardcover book. I purchased it at Goodwill for $1. I went there to pick up some children's books to donate to Winnipeg Harvest and I wasn't going to buy anything for me. But I've heard about this book for a while. It's the story of a love affair between Frank Lloyd Wright and Mamah Cheney, a married woman. I have always been fascinated by Wright's architecture and I thought this was an opportunity to learn more about the man.