Documentation of Spain’s artistic heritage can be found in many places throughout the country. Primary sources are scattered in different archives, including general historical, and regional and municipal, as well as ecclesiastical, military, family, and academy archives. Publications essential to the study of Spanish culture, and some drawings, prints, and photographs, can be found in libraries, notably but by no means exclusively the Biblioteca Nacional. The growth of national awareness of the nation’s artistic heritage can be traced in books and other documents, from the activities of Philip II in the 16th century, to the introduction of photography and the development of its role in recording, multiplying images of, affirming, and popularising, a patrimony worthy of preservation.