Casselman Archive of Islamic and Mudejar Architecture in Spain

From the University of Wisconsin's description, "This collection contains over four thousand color slides and black and white photographs of medieval Spain taken by the late Eugene Casselman (1912-1996) during his thirty years of travel throughout the Iberian peninsula. The images span over one thousand years of architectural history, from the seventh to the seventeenth century. The majority of the slides focus on the Mudejar style, an ornate court style largely inspired by Spanish Islamic architecture that was shared among Islamic, Jewish, and Christian cultures during the later Middle Ages in Spain. He even began writing a book-length manuscript on Mudejar architecture, which he never completed." Images are browsable and searchable, and are good quality.