John Henry Newman: Selected Sermons (Classics of Western Spirituality Series)
The Heart of Newman: A Synthesis, arranged by Erich Przywara, S. J.
John Henry Newman: His Inner Life, by Dr. Zeno, Capuchin
Prayers, Verses and Devotions, by Bl. John Henry Newman
The Dream of Gerontius ,by John Henry Newman, preface by Benedict J. Groeschel, CFR
The Story of A Soul, by St. Thérèse of Lisieux
Walking the Little Way of Thérèse of Lisieux: Discovering the Path of Love, by Joseph F. Schmidt, FSC.
The Hidden Face: A Study of St. Therese of Lisieux, by Ida Friederike Gorres. Ignatius Press 1959, 2003
Shirt of Flame: A Year With St. Therese of Lisieux, by Heather King. Paraclete Press, 2011
Two Sisters in the Spirit: Therese of Lisieux and Elizabeth of the Trinity, by Hans Urs von Balthasar. Ignatius Press, 1992 (originally published 1970) The Collected Works of St. Teresa of Avila, Volumes 1 - 3, Translated by Kieran Kavanaugh
A Man of the Beatitudes: Pier Giorgio Frassati, by Luciana Frassati
My Brother Pier Giorgio: His Last Days, by Luciana Frassati
Blessed Pier Giorgio Frassati, An Ordinary Christian, by Maria Di Lorenzo
The Life of St. Catherine of Siena, by Blessed Raymond of Capua
Catherine of Siena: A Passionate Life, by Don Brophy
Clare of Assisi: A Heart Full of Love, by Ilia Delio, O.S.F.
The Humility of God, by Ilia Delio, O.S.F.
Francis of Assisi, by Augustine Thompson, O.P.
Sun and Moon Over Assisi: A Personal Encounter with Francis and Clare, by Gerard Thomas Straub
Padre Pio: The True Story, by C. Bernard Ruffin
The Letters of Padre Pio: Vol. 1-3 - Volume III, Correspondence with his Spiritual Daughters (1915-1923) - Secrets of a Soul: Padre Pio's Letters to His Spiritual Directors
Words of Light: Inspiration from the Letters of Padre Pio, complied and with an introduction by Fr. Raniero Cantalamessa
39 New Saints You Should Know, by Brian O'Neel (forward by Joseph Pearce)
Stories of Karol: The Unknown Life of John Paul II, by Gain Franco Svidercoschi
Martin of Tours: Soldier, Bishop, Saint, by Régine Pernoud
The Retrial of Joan of Arc: The Evidence for Her Vindication, by Régine Pernoud
Joan: The Mysterious Life of the Heretic Who Became a Saint, by Donald Spoto
Saint Bernadette Soubirous, by Abbe Francois Trochu, translated and adapted by John Joyce, S.J.
A Holy Life: The Writings of St. Bernadette of Lourdes
A Woman Clothed With The Sun: Eight Great Apparitions of Our Lady, edited by John J. Delaney.
Fatima for Today: The Urgent Marian Message of Hope, by Andrew Apostoli.
A Pilgrim's Journey: The Autobiography of Ignatius of Loyola, Introduction, Translation, and Commentary, by Joseph N. Tylenda, S.J.
Diary: Divine Mercy in My Soul, by St. Maria Faustina Kowalska Journal of A Soul: The Autobiography of Pope John XXIII God is All Joy: The Life of St. Teresa of the Andes, by Jennifer Moorcroft Letters of St. Teresa of Jesus of the Andes, by Teresa of Jesus of the Andes and Michael D. Griffin The Secret Diary of Elisabeth Leseur: The Woman Whose Goodness Changed Her Husband from Atheist to Priest
My Life with the Saints, by James Martin, S.J.
Making Saints: How the Catholic Church Determines Who Becomes a Saint, Who Doesn't and Why, by Kenneth L. Woodward
Book of All Saints, by Adrienne von Speyr
Gathering A People, by Judith Tydings
They Called Her the Baroness: The Life of Catherine De Hueck Doherty by Lorene Hanley Duquin
The Beauty of Holiness, by Michele L. Catanese Fire and Light: Saints and Theology, by William M. Thompson A Brief History of Saints, by Lawrence S. Cunningham 101 Questions and Answers on Saints, by George P. Evans Conversations of the Saints: Words of Wisdom From God's Chosen, by Bernard-Marie, O.F.S. and Jean Huscenot, F.E.C.
Books on Mysticism and Mystics: Mysticism, by Evelyn Underhill (This is a classic.)
Mystics, by William Harmless, S.J.
The Essential Writings of Christian Mysticism, edited and with an Introduction by Bernard McGinn
Light from Light Light: An Anthology of Christian Mysticism, edited by Louis Dupre and James A. Wiseman, O.S.B. The Mysticism of Everyday, by Edward Carter, S.J.
What Are They Saying About Mysticism? by Harvey D. Egan, S.J.
Christian Mystics: The Spiritual Heart of the Christian Tradition, by Ursula King
When the Lion Roars: A Primer for the Unsuspecting Mystic, by Stephen J Rossetti
Personal favorite: Heaven Opens: The Trinitarian Mysticism of Adrienne von Speyr, by Matthew Lewis Sutton. Fortress Press, 2014
* Cross reference: The Collected Poems of T.S. Eliot (1909-1962). Faber and Faber (I believe these poems describe mystical experience in many ways.)