A collection of twelve volumes copied by the Augustian friar Miquel de Aguilar between 1700 and 1719 was located by some specialists from the National Institute of Anthropology and History in Mexico. The series made with parchment, wood and leather caps, contain offices of religious ceremonies of the convents in the colonial era. Thalia Velasco, restorative at the National Coordination Conservation of Cultural Heritage said:“It’s the first approach to the art manufacturing choir books that were made in the New Spain, which is still known little.“ Of the twelve books analyzed four kept their first binding, three have historical repairs, but keep your lids, one was reencuadernado between the eighteenth and nineteenth centuries, and two in the twentieth century by the National Library. Now they are in the National Museum of Viceroyalty for an exhibition. Tania Estrada, restorative says:“We want people to understand the use and function that had the choir books. They were widely used by the religious community, now we want the books have another link with the society not to be forgotten.“ It’s amazing how intensive such a find is and how many hours people spent for creating and designing this masterpiece of typography and notes.