If I could have only one, It would most deffinetly be Judy Hopkins...501 Rotary- Cut Quilt Blocks. Not only are there 501 patterns but each pattern has cutting directions for 6 different sizes of the block. Every block is pictured in color in the front of the book. There is also a section telling you how to use the blocks and a section giving tips on how to make them. A page for calculating yardage is also given.