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So many good ones, it's hard to know where to start with suggestions. But here are a few from my print library:
| So Amazing, So Divine: A Guide to Living Prayer | Isaac Watts | 
| Religion of the Heart | Hannah More | 
| Doors Into Prayer | Emilie Griffin | 
| Radiance: A Spiritual Memoir of Evelyn Underhill | Evelyn Underhill; ed. Bernard Bangley | 
| Meditations from Mechthild of Magdeburg | Mechthild of Magdeburg; ed. Henry Garrigan | 
| Meditations on the Heart of God | François Fénelon; tr. Robert Edmonson | 
| Things in Heaven and Hearth: Exploring the Supernatural | ed. Harold Fickett | 
| Compass of Affection: Poems New and Selected | Scott Cairns | 
| The Burning Word: A Christian Encounter with Jewish Midrash | Judith Kunst | 
| Sacred Doorways: A Beginner's Guide to Icons | Linette Martin | 
| Mudhouse Sabbath | Lauren Winner | 
| The Crying for a Vision | Walter Wangerin | 
| The Emmaus Readers: Listening for God in Contemporary Fiction | Susan Felch & Gary Schmidt, eds. | 
| A Syllable of Water: Twenty Writers of Faith Reflect on Their Art | Emilie Griffin, ed. | 
| The End of Suffering: Finding Purpose in Pain | Scott Cairns | 
| Mind the Light: Learning to See with Spiritual Eyes | J. Brent Bill | 
| Sacred Compass: The Way of Spiritual Discernment | J. Brent Bill | 
| The Wisdom of Stability: Rooting Faith in a Mobile Culture | Jonathan Wilson-Hartgrove | 
| At the Still Point: A Literary Guide to Prayer in Ordinary Time | Sarah Arthur, compiler | 
| Complete Imitation of Christ | Thomas a Kempis | 
| The Province of Joy: Praying with Flannery O'Connor | Angela Alaimo O'Donnell | 
| Endless Life: Poems of the Mystics | Scott Cairns | 
| American Pilgrimage: Sacred Journeys and Spiritual Destinations | Mark Ogilbee & Jana Riess |