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Amgueddfa Cymru – Museum Wales
Printed peace message, titled 'DYDD EWYLLYS DA XVII GOODWILL DAY / 18 MAY 1938 MAY 18 / NEGES FLYNYDDOL PLANY CYMRU TRWY'R RADIO I'R BYD / ANNUAL WORLD WIRELESS MESSAGE OF THE YOUTH OF WALES.
The young people of Wales have created a message of peace and friendship to share with young people around the world on the 18th of May every year since 1922. This is the only message of its kind in the world!
