Cymdeithas Addysg y Gweithwyr,
Rhan oPapurau D. Tecwyn Lloyd,
Tri llythyr, 1964-1966, a dderbyniodd yn ymwneud â gwaith Rhanbarth Gogledd Cymru o Gymdeithas Addysg y Gweithwyr, ynghyd â chopi o agenda cyfarfod y rhanbarth, cofnodion, a chopi drafft o'r adroddiad blynyddol, 1966-1967.
Cyfansoddiadau llenyddol Eisteddfod Cymdeithas Addysg y Gweithwyr Uwchaled a'r Cylch,
Rhan oPapurau D. Tecwyn Lloyd,
Cyfansoddiadau yr Eisteddfod Gadeiriol a gynhaliwyd yng Ngherrigydrudion, 23 Mai 1942, ynghyd â beirniadaethau teipiedig gan Gwilym R. Jones a Bob Owen, Croesor.
Jones, Gwilym R. (Gwilym Richard), 1903-1993.
Coleg Harlech's visitor's book,
Visitor's book of Coleg Harlech, 1946-1974, including signatures of eminent people in political and cultural life in Wales and beyond who attended conferences, WEA meetings and courses at the college.
Papers and correspondence of Robert Silyn Roberts and his wife Mary Silyn Roberts, 1888-1965, including correspondence 1904-1965, including papers relating to the establishment and early development of Coleg Harlech, 1926-1928.
Roberts, R. Silyn (Robert Silyn), 1871-1930.