British Library, Additional MS 54324: three paper bifolia of varying size (but all originally c. 290 x 180 mm) which were retrieved from a mid-fifteenth century psalter in 1967 and described in Bent/Bent 1969. Copied in the third quarter of the fifteenth century, and containing Mass movements as well as an anonymous Gaude flore virginali (ff. 3v-4v) whose scoring for five voices with an overall compass of 21 notes matches the index description of Dunstaple’s lost setting, E44.