Complex sentence: Bracetti was the principal subject of two books: "El Grito de Lares" by Luis Llorens Torres and "Brazo de Oro" by Cesáreo Rosa-Nieves.
Split into simpler sentences: Bracetti was the principal subject of two books. The first book was "El Grito de Lares" by Luis Llorens Torres and the second book "Brazo de Oro" by Cesáreo Rosa-Nieves.