A tape recording of a lecture by Sir Ifor Williams on the subject of the Welsh language Cymraeg Byw, conducted at a meeting of Cymdeithas Llywarch Hen, in 1960 and later broadcast on the B.B.C. as the Annual Welsh Lecture (14812)
A declivity play presented to R. T. Jenkins, entitled Ymadawiad Aruthr by Ifor Williams. (15678)
A letter from Sir Ifor Williams to a Mr Williams discussing the name Maesmynan, 1959. (36357B)
A catalogue of the library of Sir Ifor Williams compiled by his daughter Gwenno Caffell, 1965 (36490-2)