Abelard, Peter. [Letter to Heloise, abbess of the Paraclete, undated (02)] in Petri Abælardi opera 1.350

[Letter from Peter Abelard to Heloise, abbess of the Paraclete]
Heloise requested sermons for special occasions from Abelard and he addressed her in the preface to the sermons he sent her. The sermons themselves also emphasize the roles of women in the history of the faith.
Online at Epistolae (See also Bibliographia record).