Do you actually have a citation? Or, do you prefer to stick with mysterious, unnamed sources? See Trevalyn's "Rome 1944" on events inside the Vatican (far from helping the Nazis, the Vatican was almost seized by the SS, until SS General Karl Wolff decided against a take-over).
The allegations about the OSS are particularly lame. They are based on the OSS's later use of remaining Abwehr assets behind the Iron Curtain. There were no Nazis smuggled into South America for this purpose. For details, see Otto Skorzeny's "My Commando Operations".
Seydlitz...
If one is really interested, they may go to google, type vatican nazi south america. It is replete with references, countless numbers. Also one might type in gold with vatican nazi. Here again too much information for me to cite for you.
There are actually voluminous records of Catholic opposition to the Nazis and the hiding of fleeing Jews in Catholic convents and monasteries by specific request in writing by the Pope. Speaking of which, Charles de Gaulle, Col. "Wild Bill" Donovan, and Fr. Kolbe were not exactly Lutherans or Unitarians either. That the slander and defamation continue is a sign of some other agenda obviously. You can't argue with irrational hatred.
The Defamation of Pope Pius XII
Jewish Holocaust Survivor Remembers How "Catholic Underground" Fought Nazis