Handwritten papers in Latin defending theses concerning church history and theology, probably produced by students at the Irish College circa 1866.

Microfilm containing letters from members of the American Catholic hierarchy to the rectors of the Irish College in Rome, who acted as their agents, namely Paul Cullen, later Cardinal Archbishop of Dublin, and Tobias Kirby; pertaining mostly to administrative affairs in the American hierarchy; with letters from Francis Patrick Kenrick, Bishop of Philadelphia and later Archbishop of Baltimore, John England, Bishop of Charleston, John Baptist Purcell, later Archbishop of Cincinnati, and many others.