Authentic recipes *and* the history of the food!
If you are interested in 'Tex Mex' (try it, you'll like it!) this is the book for you. Authentic recipes (I know, I've been eating it since I was but a little shaver), none too difficult for even a novice cook. The history is told in wonderful pictures and the reminences of people who were there cookin' it.
Highly recommended: I sent copies to my brothers and my sons, all of whom grew up in Texas and all of whom miss the 'native' cuisine.