A book of sheep earmarks for the parishes of Llandrillo, Llandderfel, Pennant, Llanfor, Llangower, Llanymawddwy, Llangynog, Hirnant, Llanwddyn, Llanfyllin, Llanarmon, Llanrha[e]adr[-ym-Mochnant], Llansilin and Llanfihangel, 1845.

'Clustnodwr neu Lyfr Clustnodau Defaid', being a volume containing diagrams and particulars of sheep ear-marks used by farmers in the parishes of Llangynog, Pennant Melangell, Llanrhaiadr ym Mochnant, Llanwddyn and Hirnant in Montgomeryshire, Llandrillo, Llanfor, Llandderfel and Llangower in Merioneth and Llangwm in Denbighshire, 1827.

Papurau Evan Roberts, Llandderfel, [1658]-[?1990au], yn cynnwys llythyrau a chardiau post, 1921-1973, oddi wrth ystod eang o ohebwyr, gan gynnwys John Cowper Powys; erthyglau, traethodau a darlithoedd ganddo, ynghyd â nodiadau ymchwil, [?1924]-[1968x1975]; papurau personol, 1924-[?1990au]; llyfrau lloffion, papurau newydd a deunyddiau printiedig eraill, [1658]-1970; a llawysgrifau, yn cynnwys gweithiau llawysgrif gan amryw awdur megis Clwydydd a Derfelog, a gasglwyd ganddo, [c. 1736]- [20 gan., ½ cyntaf]. = Papers, [1658]-[?1990s], relating to Evan Roberts, Llandderfel, including letters and postcards, 1921-1973, from a wide range of correspondents, including John Cowper Powys; articles, essays and lectures by Evan Roberts, together with research notes, [?1924]-[1968x1975]; personal papers, 1924-[?1990s]; scrapbooks, newspapers and other printed materials, [1658]-1970; and manuscript material, including manuscript works by various authors such as Clwydydd and Derfelog, collected by him, [c. 1736]- [20 cent., first ½].