Joseph F. O'Callaghan – författare

History of Medieval Spain

History of Medieval Spain

Reconquest and Crusade in Medieval Spain

Gibraltar Crusade

Castile and the Battle for the Strait

Learned King

The Reign of Alfonso X of Castile

Last Crusade in the West

Castile and the Conquest of Granada

Cortes of Castile-León, 1188-1350

Alfonso X, the Justinian of His Age

Law and Justice in Thirteenth-Century Castile

Black Parish, White Priest

The Battle of an Activist Priest, Denis J. O'Callaghan, and his Black Parishioners against Racism, Poverty, and Corruption in Chester, One of the Poorest Cities in Pennsylvania