As the title indicates, this book features 101 different stitches you can do with a double-ended crochet hook. This is a variant of tunisian stitch and nearly always involves at least 2 colors. This book is out of print, so with the recent upswing in all things crochet, the price, when you can find it, is turns out to be more than double the original published price. I was just lucky to get mine inexpensively from someone trying to reduce their book supply.