"The Henrician Partbooks belonging to Peterhouse, Cambridge (Cambridge University Library, Peterthouse Manuscripts 471-474): A Study, with Restorations of the Incomplete Compositions Contained in them". Submitted by Nicholas John Sandon to the University of Exeter as a dissertation for the degree of Doctor of Philosophy in Music in the Faculty of Arts February 1983. Revised summer 2009 for inclusion in DIAMM (Digital Image Archive of Medieval Music) Source:Chapters I-II [2]; Chapter III, Volume I: "The Composers in Ph", pp.81-114, including Walter Erle (d.1581), pp.86-96 [3]
