Available from Embraced by God, Stella Niagara, NY:
St. Francis de Sales, Introduction to the Devout Life (There are many editions—a good one is translated w/ introduction/notes by John K. Ryan. New York; Doubleday Image Book, 2003.)
Francis de Sales: Introduction to the Devout Life and Treatise on the Love of God (The Crossroad Spiritual Legacy Series. Wright, Wendy M. New York: Crossroad, 1993.)
St. Francis de Sales, Selected Letters (Translated, with introduction by Elizabeth Stopp. London: Faber & Faber/New York: Harper, 1960._
The Sermons of St. Francis de Sales on Prayer (Edited by Lewis S. Fiorelli, translated by the Nuns of the Visitation [Frances Therese Leary], with a preface by Fr. M. Basil Pennington, and introduction by Canon Henry Benedict Mackey. Sermons of St. Francis de Sales, vol. 1. Rockford, Ill.: Tan Books, 1985.)
St. Francis de Sales: A Testimony by St. Jane de Chantal (Newly edited in translation with an introduction by Elisabeth Stopp. London: Faber, 1967.)