2 We are particularly pleased, therefore, to learn that, on the initiative of the Bishop of Tarbes and Lourdes, this Marian city is preparing an appropriate celebration for the centenary of the apparitions of the Immaculate Virgin at the grotto of Massabielle, and that an international committee has been set up for this purpose under the presidency of His Eminence Eugene Cardinal Tisserant, Dean of the Sacred College of Cardinals.
Source: Le Pelerinage de Lourdes (Vatican.va)