My favourite book is "The Essential Quilter" by Barbara Chainey. I've learned a lot about hand quilting, the British Quilting Tradition and wholecloth quilting by the book and there are lots of beautiful pictures in it.
Another favourite is "Traditional Quilting" by Mavis Fitzrandolph. This book is out of print for a long time and it was first published in 1954. I love the black and white pictures and the description how quilters worked at that time without all the helpful notions and easy to handle materials we have today. It's so interesting to read about the quilting history.