https://www.vatican.va/content/pius-xii/la/encyclicals/documents/hf_p-xii_enc_19071950_summi-maeroris.html
Summi maeroris, Pius PP. XII, MCML, Epistula Encylica, publicae preces, ad populorum impetrandam pacem, concordiam
summi maerorisdiexixiuliimcml
https://www.ewtn.com/catholicism/library/yad-vashem-changes-reference-to-pius-xii-1958
EWTN is a global, Catholic Television, Catholic Radio, and Catholic News Network that provides catholic programming and news coverage from around the world.
yad vashempius xiichangesreferenceewtn