Pius XII

Encyclical, Ad Caeli Reginam, Oct. 11, 1954:

In accomplishing this work of the redemption, the Most Blessed Virgin Mary was certainly closely joined with Christ ... was associated with Jesus Christ, the very principle of salvation, by divine plan, and indeed in a way similar to that in which Eve was associated with Adam, the principle of death, so that we can say that the work of our salvation was accomplished according to a certain recapitulation ... and if she was joined with her Son, even on Golgotha, [and] she offered Him, together with the holocaust of her Mother's rights and love, like a New Eve, for all the sons of Adam, defiled by his wretched fall, as a result, beyond doubt, it is right to conclude that just as Christ, the New Adam should be called King not only because He is the Son of God, but also because He is our Redeemer, so by a certain analogy, the most Blessed Virgin is Queen, not only because she is the Mother of God, but also because as the New Eve she was associated with the New Adam.

Encyclical, Fulgens corona, Sept. 8, 1953:

... she was joined with her Only-begotten Son in the struggle against the most wicked infernal serpent.

Apostolic Constitution, Munificentissimus Deus, Nov. 1, 1950:

We must especially remember this, that starting in the second century, the Virgin Mary is presented by the holy Fathers as the New Eve, who, although subject to the New Adam, was most closely joined with Him in that struggle against the infernal enemy, which, as was foretold in the Protoevangelium, was to come to the most full victory over sin and death, which are always joined together in the writings of the Apostle of the Gentiles. Hence, just as the glorious Resurrection of Christ was an essential part and final sign of this victory, so that struggle of the Blessed Virgin in common with her Son, had to be closed by the glorification of her virginal body.

Radio message to Fatima, May13, 1946:

Jesus is King of the Eternal Ages by nature and by right of conquest; through Him, with Him, and subordinate to Him, Mary is Queen by grace, by divine relationship, by right of conquest, and by singular choice [of the Father].

Encyclical, On the Mystical Body, June 29, 1943:

She it was who, as the New Eve, free from every stain of original or personal sin, always most closely joined with her Son, offered Him to the Eternal Father together with the holocaust of her motherly rights and motherly love, for all the sons of Adam, defiled by his miserable fall.