Stock Photo: Spanish school. The Cantigas de Santa Maria (manuscript with music notations): Merchants negotiationg and loading wool. Canticle n°35, folio 53 R. Madrid, San Lorenzo de El Escorial library. Author: ALFONSO X OF CASTILE, THE WISE. Location: MONASTERIO-BIBLIOTECA-COLECCION, SAN LORENZO DEL ESCORIAL, MADRID, SPAIN.