Most vegan cookbooks have at least some tofu, seitan, or tempeh recipes; but here are the ones I have with more than most:
"The TVP Cookbook" by Dorothy Bates
"Cooking with Gluten and Seitan" Dorothy Bates and Colby Wingate
"The Art of Tofu" Akasha Richmond (this book utilizes silken tofu, exclusively)
"The Whole Soy cookbook" Patricia Greenberg
"Authentic Chinese Cuisine" Bryanna Clark Grogan
There are lots on the internet, as Leo mentioned.