These photos were taken at a Dominican Rite Low Mass celebrated by the American Dominican Fr. Pius Pietrzyk, O.P., a priest of the St. Joseph Province in the chapel of St. Pius V at Santa Maria Maggiore, Rome, on the saint's feast. His intention was an increase in vocations to the Order. The server was Fr. Alan Moran, O.P. Santa Maria Maggiore is the home of the Sacred Penitentiary of the Roman Church, traditionally staffed by the Dominican Order.
The first image shows the celebrant on the way to the altar:
The Dominus Vobiscum:
The server is about to move the Missal for the Gospel:
I thank Fr. Pius for sharing these photos.