The group of works on paper belonging to the Madrazo family, which the Museo del Prado acquired in 2006, includes an extraordinary collection of photographs. Most are calotypes by the Circle of Photographer-Painters from the Caffè Greco in Rome, and they were collected by Luis de Madrazo during his stay at the Roman Academy between 1848 and 1852. In the mid 19th century, Rome remained the p