Start with high-confidence western states cooking books, then narrow by subgenre or adjacent topics.
The Western Junior League Cookbook
Ann Seranne
Comfort Food the Cowboy Way
Kent Rollins, Shannon Rollins
A Taste of Cowboy
The Cowgirl's Cookbook
Jill Charlotte Stanford
American Western Cooking
Robert McGrath
End of the Trail Eats
Natalie Bright
Forage. Gather. Feast.
Maria Finn
The Oregon Farm Table Cookbook
Karista Bennett