Gregynog 'Orders of Service' from 1931-36 meetings of the Welsh Education Advisory Committee (WEAC) Math Eitemau Uwchlwytho gan Archifau Heddwch CMRC
Montgomeryshire 6th Form School Conferences 1963-73, Council for Education in World Citizenship (CEWC) Math Eitemau Uwchlwytho gan Archifau Heddwch CMRC
