Anselm, Saint, Archbishop of Canterbury. [Letter to Eulalia, abbess of Shaftesbury, 1104] in Sancti Anselmi Cantuariensis Archiepiscopi Opera Omnia 5.274-75

[Letter from Anselm, archbishop of Canterbury, to Eulalia, abbess of Shaftesbury ]
From his exile, archbishop Anselm writes that he has received their message asking for a letter, acknowledges their affection, and sends spiritual advice.
Online at Epistolae (See also Bibliographia record).