The book I have is Leisure Arts Great American Quilts Book six. The quilt in the book is by Charlene Bement and is named "Nine in the Window". I just used a plate (it gave me the size I wanted)and drew my circles. I then sewed them right sides together all the way around. I cut alittle slit to turn them and then made sure the slit was under the "arch" of the window to be sewed in and prevent a disaster. Here is another link.
http://quiltershaven.tripod.com/quilts.htm