1. University of Pennsylvania, Ms. Codex 1247 DS ID: DS982 Title: Record of sale Author: Niccolò D'Andrea Piccolomini Place: Siena Date: 1469-1476.
2. University of Pennsylvania, Ms. Coll. 742 Folder 26 DS ID: DS1844 Title: Will Author: Guido di Biagio di Carlo Piccolomini Date: 1410.