Contents The letters by Aeneas Silvius Piccolomini, who became Pope Pius II, have been published in several collections. Piccolomini was a relatively well-known writer in the fifteenth century, and among several other works of history, and autobiography, and a piece of erotic literature, he also collected and published a collection of his own letters. The arrangement of the letters contained here in MS 191 does not appear to follow the arrangment of any of the modern published editions, but the...