Documental and bibliographic references on the production of choir books from New Spain are scarce. This restriction, coupled with the finding of a collection of books produced by the Novo Hispanic copyist Miguel de Aguilar, aroused the authors’ interest to carry out the registration and study of these works, central themes of this report. As part of the research project it was decided to carry out a comparative analysis, also because the respective items of the collection are stored in different archives of the Instituto Nacional de Antropologia (National Institute of Anthropology and History, INAH): el Museo Nacional del Virreinato (National Museums of Mexican Viceroyalty, MNV) el Museo Nacional de Historia (National Museum of History, MNH), and the Biblioteca Nacional de Antropologia e Historia (National Library of Anthropology and History, BNAH), all in Mexico. By comparing the constituting materials of the different copies as well as their constructional properties, both similarities and differences came to the light, which yield valuable information about the tradition of Mexican bookbinding in the eighteenth century.