The pope''s last crusade : how an American Jesuit helped Pope Pius XI''s campaign to stop Hitler /

by Eisner, Peter (1965-)
Published 2013

Wider den Rassismus : Entwurf einer nicht erschienenen Enzyklika (1938) /

by Gundlach, Gustav (S.I.) (1892-1963)
Published 2001

The hidden encyclical of Pius XI /

by Passelecq, Georges (O.S.B.) (1919-1999)
Published 1997