Fifty-two discoveries from the BiblioPhilly project, No. 35/52 Michele Zopello, Litterarum simulationis liber; University of Pennsylvania, Lawrence J. Schoenberg Collection, LJS 225, fol. 1r One of the masterpieces of the Lawrence J. Schoenberg Collection at the University of Pennsylvania is the presentation copy of a work on cryptography made for Alfonso da Borgia (1378–1458) during…
