Start with high-confidence southwestern cooking books, then narrow by subgenre or adjacent topics.
S Is for Southern
Editors of Garden and Gun, David DiBenedetto
Being Texan
Editors of Texas Monthly, Texas Monthly
The Potlikker Papers
John T. Edge
Will It Skillet?
Daniel Shumski
Beard on Food
James Beard, Mark Bittman
The Easy 5-ingredient Slow Cooker Cookbook
Karen Bellessa Petersen
101 Asian Dishes You Need to Cook Before You Die
Jet Tila
Food for Thought
Alton Brown