In his article for the Vatican newspaper, "L'Osservatore Romano" (April 29, 1998), Father Pierre Blet, the last surviving editor of the series, defended the integrity of the collection. "In the first place, it is not clear exactly how the omission of certain documents would help to exonerate Pius XII from the omissions alleged against him," Blet wrote. "On the other hand, to say in peremptory tones that our publication is incomplete is tantamount to asserting what cannot be proved: to this end it would be necessary to compare our publication with the archives and show which documents in the archives are missing from our publication." Blet added that he and three other Jesuits "did not deliberately overlook any significant document, because we would have considered it harmful to the Pope's image and the Holy See's reputation."