The Love of Learning and the Desire for God, by Jean LeClerq,
Western Ascetism by Owen Chadwick,
and
E. Michael Jones' trilogy:
Degenerate Moderns on the cultural revolution of the early 20th century,
Dionysus Rising on music and Wagner's relationship to Nietzsche and Hitler,
and
Living Machines on Walter Gropius and the Bauhaus movement, available from Ignatius Press.