SI AGGIUNGE: Thomas John. Welsh Melodies with Welsh and English poetry. London, Addison, Hollier & Lucas [1862-1874]. 2 volumi.
I DOCUMENTO: Opera complete in 6 volumi. Con timbro di precedente proprietà al frontespizio Aquinas Library Villa Schifanoia Florence. The arrangements by John Greig, Joseph Parry, F. W. Bussell, H. Fleetwood Sheppard and W. H. Hopkinson. With articles, notes and illustrations.