Keywords: Pope Urban II Preaching the First Crusade.png Pope Urbanus II Preaching the First Crusade Scanned from reprint of 1841/1852 editions of Extraordinary Popular Delusions and the Madness of Crowds by Charles Mackay LL D ISBN 1-5866-3558-1 unknown author PD-Art Urbanus II First Crusade Extraordinary Popular Delusions and the Madness of Crowds |