Start with high-confidence stories set in mexico books, then narrow by subgenre or adjacent topics.
Flat Stanley's Worldwide Adventures #5: the Amazing Mexican Secret
Jeff Brown
The Corn Grows Ripe
Dorothy Rhoads
Eddie Red Undercover: Mystery in Mayan Mexico
Marcia Wells
Mi Ciudad Canta
Cynthia Harmony, Adriana Dominguez
Elena's Serenade
Campbell Geeslin
Off We Go to Mexico
Laurie Krebs
The Hidden City
David Bowles
