I just finished reading Miserly Moms by Jonni McCoy. She's got some fascinating information on the cost of utilities, some decent sounding vegetarian recipes and a very extensive list of resources in the back of the book.
It's not a book that I'd purchase but its definitely worth a read. I think of books like The Complete Tightwad Gazette and The Encyclopedia of Country Living as books worth buying because there is always something new to learn or reference in them. This book made great points but once you write the recipes you like down, make note of ways to cut your utility bills and grocery costs you're pretty much done with it. Check it out at your local library.