There's an Aidan Nichols collection in pre-pub, and a couple of his other works in Logos, but none of his books on theology and the arts. Please try to get some or all of these:
Redeeming Beauty: Soundings in Sacral Aesthetics (Ashgate Studies in Theology, Imagination and the Arts)
Lost in Wonder: Essays on Liturgy and the Arts
A Key to Balthasar: Hans Urs von Balthasar on Beauty, Goodness, and Truth
The Art of God Incarnate: Theology and Image in Christian Tradition
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