The letter books of the Benedictine nuns of Lüne Abbey provide one of the richest sources for late medieval devotion, learning and communication networks. A remarkable number of women, from the prioress to the young girls in the school, provide an insight into their daily life, their interaction with the provost, their families in Lüneburg, the spiritual friendship between convents, and the struggle against the Lutheran Reformation. The edition includes over 450 letters, written in Latin, Low German, and a characteristic mix of both.