Immaculate Conception Latin Mass - Catholic Stock Photo

The Immaculate Conception is a dogma of the Catholic Church which states that Mary, mother of Jesus has been free of original sin from the moment of her conception. Wikipedia

The Tridentine Mass, also known as the Traditional Latin Mass (TLM), is the Roman Rite Mass of the Catholic Church which appears in typical editions of the Roman Missal published from 1570 to 1962. Celebrated exclusively in Ecclesiastical Latin, it was the most widely used Eucharistic liturgy in the world from its issuance in 1570 until the introduction of the Mass of Paul VI (promulgated in 1969, with the revised Roman Missal appearing in 1970). Wikipedia