Happy Feast Day of St. Peter of Alcantara!
From The Saint Andrew Daily Missal with Vespers for Sundays and Feasts by Dom Gaspar Lefebvre, O.S.B., of the Abbey of St- André (Bruges, Belgium: Liturgical Apostolate of the Abbey of St-André, 1956), here is the Mass for the Feast of St. Peter of Alcantara, the great Spiritual Director of the Seraphic Virgin of Mount Carmel and Illuminatress of prayer and contemplation, St. Teresa of Jesus.