The Mule Tamer III, Marta's Quest — John C. Horst

Nineteen-eleven is the year our two beauties, Rebecca Walsh and Marta del Toro leave the comfort and safety of their boarding school back East, under the watchful eye of their grandmother Abuelita and Madame Boutin, headmistress of Stonefields School for Young Ladies. They're headed to Smith College in the fall, to continue on the path of the blueblood debutante. But something is rotten in their beloved Mexico. The Revolution has started; Emiliano Zapata and Pancho Villa are on the move. Adulio, their faithful servant and overseer of the Del Toro ranch has come to fetch them. They are needed in Mexico.