After forty years : encyclical letter of His Holiness Pius XI, in commemoration of the fortieth anniversary of the encyclical "Rerum novarum" (The new conditions)
"The English text of the encyclical presented here follows that which appeared in the New York Times, Sunday, May 24, 1931; wirelessed official English translation of the Pope's encyclical letter 'Quadragesimo anno' (After forty years)".
With: Litterae Encyclicae...De Modernistarum Doctrinis / Pius X. [s.l. : s.n., 1907?].