Adroddiadau Blynyddol Cynghair y Cenhedloedd...
Cymru a Heddwch Byd 1936-1937
The League Of Nations Union Year Book 1934
League of Nations Union Annual Report 1930
WLNU - Welsh League of Nations Union Reports ...
Temple of Peace
Trip Ysgol Sul Eglwys Sant Digain, tua 1930au