http://www.bne.es/en/Catalogos/BibliotecaDigitalHispanica/Inicio/
The Hispanic Digital Library is the digital library of the Biblioteca Nacional de España. It provides access free of charge to thousands of digitised documents, including books printed from the 15th to the 19th century, manuscripts, drawings, engravings, pamphlets, posters, photographs, maps, atlases, music scores, historic newspapers and magazines and audio recordings.
Scholarly Resources: