The New Tunisian Crochet: Contemporary Designs from Time-Honored Traditions is written by Dora Ohrenstein who writes the Talking Crochet e-newsletter and is the mastermind behind The Crochet Insider online magazine.
This book is TWO major components. One very important component is something you might not guess... it's also a Tunisian Stitch DICTIONARY with 33 Tunisian stitch patterns. And they aren't just written but SHOWN in symbol diagram form. (revolutionary for Tunisian!). She comments on working a circle in short-rows, the history of Tunisian Crochet, double-ended crochet hooks, and entrelac crochet. The second important component is 11 patterns.