Sultan Abdul Aziz dedicated Treaty on Perspectives & shades by cav. Annibale angelini, published 1862 in Rome. a very interesting book (size is cm 70x50 ca.!!!) if you are an architect or a historian, a museum curator, a collector of antique books, etc..... Google will tell you everything else about... Lots of pics on Facebook: https://www.facebook.com/media/set/?set=a.10151813898434258.1073741877.3...