In the Fall of 2008, the Penn Libraries acquired a Latin codex of the turn of the 14th century (Ms. Codex 1271), a collection of short works by Thomas Aquinas [1225 - 1274]. It includes notably (fol. 68r - 69r) Thomas's letter to the countess of Brabant concerning the taxation of the Jews who allegedly gained their money through forbidden "usurious" operations. This letter has already been subject to much scholarly attention. However, attached to the newly acquired codex is another letter, unpublished, on the same subject by the famous Archbishop of Canterbury John Pacham (or: Peckham) [ca. 1230 -1292,] and yet another one by the little known Gerard of Aberville [d. 1272].