Dau lyfr nodiadau'n cynnwys nodiadau o Archifau'r Coleg Seisnig yn Rhufain, Archifau'r Fatican ac eraill am y pererinion o Gymru, ynghyd â llythyr oddi wrth olygydd Trivium (Cylchgrawn Coleg Prifysgol Dewi Sant, Llanbedr Pont Steffan) yn ymwneud â'i erthygl 'Welsh Pilgrims at Rome', a gwahanlithoedd o'r erthygl a gyhoeddwyd mewn dwy ran yn y cylchgrawn, 1971-1972. Ceir hefyd ffolder yn dwyn y teitl 'Recusants' sy'n cynnwys ei waith ymchwil a braslun o'i ddarlith 'Rome and Wales', Croesoswallt, 1959.

‘On obedience to kings’; anecdotes (many about clergy in France); Roman history; and other observations, [1610x1648].

An incomplete journal describing part of a tour of Italy, 12 October-9 December [1822] (watermark 1813); the writer is unknown but does not appear to be Thomas Prior.
The journal begins in Fiorenz[u]ola [d'Arda], 12 October, with the writer and his party then moving on to Parma (ff. 1 verso-2), Bologna (f. 2 recto-verso), Florence (ff. 3 verso-5 verso), Terni (ff. 7 verso-8), Rome, 5-17 November (ff. 10-11) and Naples (ff. 13 verso), arriving on 23 November. The volume ends with an account of an ascent of Vesuvius on 9 December (ff. 14-16), including a sketch of the mountain (f. 15).