 O'Connor was also associated with the Catholic authors Hilaire Belloc, Maurice Baring and the (convert) typographer and engraver Eric Gill.O'Connor published poems, book reviews and prose in English Catholic periodicals and news papers, and also translated the work of French poet Paul Claudel (including "The Satin Slipper" and "Ways and Crossways") and the philosopher Jacques Maritain's "Art et Scolastique".The papers of Monsignor John O'Connor are held at the University of St. Michael's College at the University of Toronto.