Canon Law as a study had been practically prohibited at the universities since 1536 (Merriman, Thomas Cromwell, i.
Merriman, Life and Letters of Thomas Cromwell (1902); S.
Merriman and Mr J.
Merriman, Journ.
Thomas's The Pilgrim and others; and some additions have been made to the documentary sources contained in the Letters and Papers by recent works, such as Ehses' Romische Dokumente, and Merriman's Life and Letters of Thomas Cromwell.