Papers, 1842-1955, relating to the historian Evan Roberts, Llandderfel, Merionethshire, including letters and postcards, 1921-1955, from a wide range of correspondents, including John Cowper Powys; unpublished manuscript works by various authors; lectures and articles by Evan Roberts; research notes; poor law rate book for the parish of Llandderfel, 1842-1845.

Cyfrol, [1830au, hwyr]-1916 (dyfrnod 1827), sy'n cynnwys adysgrif o'r rhestr degwm ar gyfer Llandderfel, sir Feirionnydd (ond yn hepgor manylion tirfeddianwyr a thenantiaid), [1830au, hwyr] (ff. 2-13), yn ogystal â nodiadau, [20 gan., cynnar], yn llaw Charles Jones, Llandderfel, ar hanes y plwyf (ff. 13 verso-28, 78 verso-79), a cherddi, 1913-1916 (ff. 1, 78, 79-80, 81 recto-verso a thu mewn i'r clawr ôl). = A volume, [late 1830s]-1916 (watermark 1827), containing a transcript of the tithe apportionment for Llandderfel, Merioneth (but omitting details of landowners and tenants), [late 1830s] (ff. 2-13), along with notes, [early 20 cent.], in the hand of Charles Jones, Llandderfel, on the history of the parish (ff. 13 verso-28, 78 verso-79), and poetry, 1913-1916 (ff. 1, 13 verso, 77 verso-78, 79-80, 81 recto-verso and inside back cover).
Cynhwysa'r nodiadau restr o ffermydd a bythynnod Llandderfel a Llanfor (ff. 13 verso, 14 verso-20), ac ysgrifau ar deulu'r Llwydiaid, Pale (ff. 21 verso-22), teulu John Davies, Vronhaulog [Fronheulog] (ff. 22 verso-23 verso, 27-28 verso), Dafydd Edwards, Tyisa (ff. 24-26), a theulu Charles Jones (f. 26 verso). Rhoddwyd ychydig o eitemau rhydd mewn amlen archifol (ff. i, 82-86). = The notes include list of farms and cottages in the parishes of Llandderfel and Llanfor (ff. 13 verso, 14 verso-20), memoirs on the Llwyd family of Palé (ff. 21 verso-22), the family of John Davies, Vronhaulog [Fronheulog] (ff. 22 verso-23 verso, 27-28 verso), Dafydd Edwards, Tyisa (ff. 24-26), and Charles Jones's family (f. 26 verso). A few loose items have been placed in an archival envelope (ff. i, 82-86).

A draft history of the parish of Llandderfel, with notes from Archaeologia Cambrensis.