The dedication of the Chapel and the blessing of the generalate took place on October 11, 1966, the feast day in honor of Mary, Mother of the Church, a title given to her at the close the third session of Vatican Council II and the name chosen for the chapel.
The relics in the main altar are those of St. Barnabas, St. Augustine, St. Ambrose, St. Lucy, and St. Maria Goretti.
Prof Bruno Appolonj-Ghetti was the architect. Prof. Francesco Nagni sculpted the crucifix, statues and ambos.
Prof. Gilda Nagni, sister of the sculptor, designed the windows above the side altars, the large circular window in the choir loft, and the windows in the nave and sanctuary. Signor Signorelli designed the windows above the marble on sides walls in the nave of the chapel.
The pipe organ was built by the Ruffatti Brothers of Padua, Italy, and was a gift from the sisters of the Canadian province. It was completed on January 26, 1967.