Page 6 line 1, for "Pius II." read "Sixtus IV."

The Frontispiece and the illustrations facing pp. 40, 42, and 60 (2) are from photographs by Hanfstaengl (Munich), those facing pp. 46 (No. 2) and 68 by Anderson (Rome), that facing page 108 by A. Braun & Co. (Dornach and Paris), those facing pp. 94 and 116 from private photographs, and the remainder by Alinari (Florence).