- Hadley: Introduction to Roman Law. 1876.
- Morey: Outlines of Roman Law. 1893.
- Muirhead: Historical Introduction to the Private Law of Rome. 1899.
- Howe: Studies in the Civil Law. 1896.
Roman Archæology—
- Lanciani: Ancient Rome in the Light of Recent Discoveries. 1888.
- Lanciani: Pagan and Christian Rome. 1896.
- Lanciani: Ruins and Excavations of Ancient Rome, 1897.
- Lanciani: Destruction of Ancient Rome. 1899.
- Mau: Pompeii, translated by Kelsey. 1899.
- Plainer: Topography and Monuments of Ancient Rome. 1904.
- Lovell: Stories in Stone upon the Roman Forum. 1902.
- Burton-Brown: Recent Excavations in the Roman Forum. 1905.
Christianity—
General Church Histories:
- Moeller: History of the Christian Church. 1898-1900.
- Gieseler: Church History. 1857-79.
- Neander: History of the Christian Religion and Church. 1853-4.
- Schaff: History of the Christian Church. 1884-92.
- Alzog: Manual of Universal Church History. 1874-8.
- Kurtz: Church History. 1860.
- Milman: History of Christianity.
- Milman: Latin Christianity. 1881.
- Allen: Outline of Christian History. 1886.
- Allen: Christian Institutions. 1897.
- Fisher: History of the Christian Church. 1887.
The Early Church:
- Pressensé: Early Years of Christianity. 1873.
- Fisher: Beginnings of Christianity. 1877.
- Carr: Church and the Roman Empire. 1902.
- Spence: Early Christianity and Paganism. 1902.
- Ramsay: Church in the Roman Empire before 170. 1893.
- Gregg: Decian Persecution. 1898.
- Healy: The Valerian Persecution. 1905.
- Mason: Persecution of Diocletian. 1876.
- Renan: Influence of the Institutions, Thought, and Culture of Rome on Christianity. 1898.
- Hardy: Studies in Roman History. 1906.
- Uhlhorn: Conflict of Christianity with Heathenism. 1879.
- Newman: Arians of the Fourth Century. 1888.
- Gwatkin: Arian Controversy 1889.
- Cutts: St. Augustine. 1881.
- Stanley: Eastern Church. 1884.
- Smith-Wace: Dictionary of Christian Biography. 1877-87.