FULL-PAGE PLATES
| Battle between Constantine and Maxentius (from a painting by Giulio Romano, Fransesco Penni, and Raffaellino del Colle) (Heliotype) | [Frontispiece] |
| Arch of Constantine | [20] |
| The Translation of S. Cyril's Remains (fresco in S. Clemente. done at the order of Maria Macellaria) | [32] |
| The Western Summit of the Capitoline Hill | [86] |
| Panel from the Arch of Marcus Aurelius (Heliotype) | [90] |
| Plan of Schola above the Catacombs of Callixtus (from Nortet's Les Catacombes Romains | [118] |
| Plan of Old S. Peter's, showing its relation to the Circus of Nero | [128] |
| Plan of the Graves surrounding that of S. Peter discovered at the Time of Paul V. (from a rare engraving by Benedetto Drei, head master mason to the Pope. The site of the tomb of S. Peter and the Fenestella are indicated by the author) | [132] |
| S. Peter's in 1588. (from an engraving by Ciampini) | [146] |
| The Two Basilicas of S. Paul (the original structure of Constantine in black; that of Theodosius and Honorius shaded) | [150] |
| Map showing the Location of Phaon's Villa | [188] |
| Sarcophagus of Helena, Mother of Constantine (Heliotype) | [198] |
| Rotunda and Obelisk South of Old S. Peter's. (After Bonanni) | [202] |
| Crypt of Pope Cornelius | [218] |
| The Cloisters of the Lateran, as now restored (Heliotype) | [238] |
| Tomb of Innocent VIII (Heliotype) | [242] |
| Tomb of Paul III (Heliotype) | [246] |
| Figure from the Tomb of Clement XIII (Heliotype) | [250] |
| Interior of a Columbarium in the Vigna Codini | [260] |
| Detail from the Ceiling of the House discovered in the Farnesina Gardens | [264] |
| Works of Art discovered in the Tomb of Sulpicius Platorinus (Heliotype) | [268] |
| Tomb of the Boy Q. Sulpicius Maximus (Heliotype) | [282] |
| The Appian Way and the Campagna | [286] |
| Objects found in the Grave of Crepereia Tryphæna | [302] |
| Christian Military Cemetery of Concordia Sagittaria | [324] |
| The Ideal Roman Figure of Christ (Heliotype) | [348] |