An imperfect draft of a plan for a history of Anglesey: Chapter 5. 'of the soil of the Island', etc. (f. 2 recto-verso); Chapter 6. 'of the Inhabitants, Religion and Sects. Their meat & drink. Their raiment. Beds' (ff. 2 verso-3 verso); Chapter 7. 'Catalogues of Fishes, Fowl & Beasts' [heading only] (f. 4); Chapter 8. 'of Reptiles &c. of Trees, Plants Comon in this Island, of Fossils & subteranian [sic] trees' [there are no particulars of reptiles] (f. 4 recto verso)); Chapter 9. 'of the air of the Island', etc. [heading only] (f. 4 verso).

An interleaved copy of Henry Rowlands, Mona Antiqua Restaurata ... (Dublin, 1723, ESTC T139797), with manuscript notes by two former owners, Lewis Morris, [1740s], and Sir J. T. Stanley (later 1st Baron Stanley of Alderley), [1840s].
The notes are to be found on additional leaves inserted at the beginning of the volume (ff. i-ii, pp. 1-84 passim), at the end (pp. 85, 166-168) and on the interleaves, with annotations on some of the original printed leaves by Lewis Morris. The volume also includes a number of pen and wash drawings by Lewis Morris of churches, houses and other objects, including churches at Rhospeirio, Llanrhuddlad (pencil draft), Amlwch, Holyhead, Llanddona, Penrhôs Lligwy, Llanelian (pencil draft), Llanerchmedd, Bodedern, Llanfechell, Llanynghenedl, Llanfflewyn, Llanvair yn Neubwll, Llanddausant, Aberffraw and Bodewryd, the village of Llanfechell, and the seats of Brynddu, Caerau, Bodowen, Bodorgan and Penrhos; these are mostly to be found on the additional leaves at the end of the volume (pp. 85-143 passim).

Four volumes containing an account of Anglesey, its history and place names compiled by Thomas Pritchard (''Rhen Graswr Elaeth') (Amlwch, 1907).