Ad Caeli Reginam §4

⁴ It is well known that we have taken advantage of every opportunity - through personal audiences and radio broadcasts - to exhort Our children in Christ to a strong and tender love, as becomes children, for Our most gracious and exalted Mother. On this point it is particularly fitting to call to mind the radio message which We addressed to the people of Portugal, when the miraculous image of the Virgin Mary which is venerated at Fatima was being crowned with a golden diadem. We Ourselves called this the heralding of the "sovereignty" of Mary.