| James Dennistoun of Dennistoun. From a medallion in the possession of his nephew James W. Dennistoun of Dennistoun | Frontispiece |
| TO FACE PAGE |
| View of Urbino. (Photo Alinari) | 22 |
| The Battle of S. Egidio. After the picture by Paolo Uccello in the National Gallery. Portraits of Carlo Malatesta and his nephew Galeotto "il Beato" | 44 |
| Leonello d'Este. After the picture by Pisanello in the Morelli Gallery, Bergamo. (Photo Alinari) | 54 |
| NicolÒ Piccinino. From a bronze medal by Pisanello. By the courtesy of G.F. Hill, Esq. | 70 |
| Vittorino da Feltre. From a medal by Pisanello in the British Museum. By the courtesy of G.F. Hill, Esq. | 70 |
| San Leo and Maiuolo. From a drawing by Agostino Nini | 78 |
| Federigo of Urbino. From the XV. Century relief in the Bargello, Florence. (Photo Alinari) | 86 |
| Francesco Sforza. From the XV. Century relief in the Bargello, Florence. (Photo Alinari) | 98 |
| Federigo, Duke of Urbino, and Battista, his wife. From the picture by Piero della Francesca in the Uffizi Gallery, Florence. (Photo Alinari) | 120 |
| Allegory. After the picture by Piero della Francesca in the Uffizi Gallery, Florence. (Photo Alinari) | 122 |
| Allegory. After the picture by Piero della Francesca in the Uffizi Gallery, Florence. (Photo Alinari) | 124 |
| Sigismondo Malatesta. Detail from the fresco by Piero della Francesca in the Tempio Malatestiano in Rimini. (Photo Alinari) | 132 |
| Urbino. From an original drawing by Agostino Nini of Bologna | 148 |
| The Flagellation. After the picture by Piero della Francesca in the Sacristy of the Duomo, Urbino. Supposed portraits of Duke Federigo and Caterino Zeno. (Photo Alinari) | 152 |
| Fifteenth-century Court of the Palazzo Ducale, Urbino. (Photo Alinari) | 162 |
| Pio II. at Ancona. After the fresco by Pinturicchio in the Cathedral Library, Siena. (Photo Brogi) | 178 |
| Portrait of Leon Battista Alberti. From the relief by Pisanello in the Dreyfus Collection | 194 |
| Pope Sixtus IV. From a miniature prefixed to the dedication copy of Platina's Lives of the Popes in the Vatican Library | 202 |
| Battista Sforza, Duchess of Urbino, second wife of Duke Federigo. From the bust by Francesco Laurana in the Bargello, Florence. (Photo Alinari) | 214 |
| Federigo of Urbino and his Family. Detail from the picture by Justus of Ghent, in the Palazzo Ducale, Urbino. (From the Ducal Collection.) (Photo Alinari) | 216 |
| Lorenzo de' Medici. From the fresco by Ghirlandaio in S. TrinitÀ, Florence. (Photo Alinari) | 238 |
| Giuliano de' Medici. (Photo Alinari) | 240 |
| The Birth of Venus. Supposed portrait of Simonetta Cattaneo—mistress of Giuliano de' Medici. Detail from the picture by Sandro Botticelli in the Uffizi Gallery, Florence. (Photo Alinari) | 242 |
| Astorgio III. de' Manfredi. From the picture by Scaletti in the Pinacoteca of Faenza | 258 |
| Federigo di Montefeltro. After the picture by Justus of Ghent, once in the Ducal Collection at Urbino, now in the Palazzo Barberini in Rome. (Photo Anderson) | 266 |
| The Contessa Palma of Urbino. After the portrait by Piero della Francesca in the National Gallery | 280 |
| Guidobaldo I. From a picture in the Colonna Gallery in Rome | 296 |
| Caterina Sforza. After the picture by Marco Palmezzani in the Pinacoteca of ForlÌ. (Photo Alinari) | 306 |
| Isabella of Aragon. After the drawing by Beltraffio in the Biblioteca Ambrogiana, Milan. (Photo Anderson) | 310 |
| Pope Alexander VI. Detail from a fresco by Pinturicchio in the Borgia apartments of the Vatican, Rome | 320 |
| "Diva Julia." From a bronze medal ca. 1482 by L'Antico in the British Museum. By the courtesy of G.F. Hill, Esq. | 330 |
| Cesare Borgia. From a medal ca. 1500 in the British Museum. By the courtesy of G.F. Hill, Esq. | 330 |
| Julius II as Cardinal. From a medal in the British Museum. By the
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