incunabula, and several bound manuscript volumes. The latter include individual collections of psalms and prayers intended as an aid to private devotion, known as the Books of Hours. The most notable of these is the Horae Beatae Mariae Virginis, Cum Calendario—also known as the Manhattanville Book of Hours.
=== Pius X School of Liturgical Music ===
The Pius X School of Liturgical Music was opened in 1916 and closed in 1960. It was founded by Justine Ward, who had developed teaching methods for Gregorian chant emulating the techniques of the monks in Solesmes, and by Georgia Stevens, a musician and nun. Faculty over the years included Ward, Achille Bragers and André Mocquereau. Thousands of music teachers studied at the school, including Cecilia Clare Bocard and Thomas Mark Liotta. The school's namesake was Pope Pius X, a devotee of sacred music who initiated reform of the liturgy in the 20th century. In 1959, Richard Rodgers attended a concert on the college's campus as part of research for The Sound of Music. …
