From 1459 to 1475 he taught almost uninterruptedly at Paris, Lille, Douay, Ghent, and Rostock in Germany, where, in 1473, he was made Master of Sacred Theology.

[7] According to an old Dominican tradition, in the early 13th century, Dominic was distressed at his lack of success in his preaching against the Albigensians and prayed to the Virgin Mary for help.

[4] Herbert Thurston, while describing Alanus as pious and earnest, argued that he was "a victim of the most astounding hallucinations" and that his revelations were based on the imaginary testimony of nonexistent writers.

[11] Such an imprimatur would have been issued following the issuance of a nihil obstat ("nothing obstructs") by a censor who reviewed the material to determine if it contradicted Catholic teaching.

Under the rules of canon law, neither a nihil obstat nor an imprimatur would necessarily reflect the personal opinion of either the censor or the archbishop regarding the document reviewed.

It was Hayes' predecessor, John Cardinal Farley, who issued an imprimatur for the edition of the Catholic Encyclopedia which describes the rosary promises as ahistorical.