1. University of Pennsylvania, Ms. Coll. 390 Item 821 DS ID: DS7977 Title: Prabodhasudhākara Author: Ādi Shankara Date: 1787.
2. University of Pennsylvania, Ms. Coll. 390 Item 888 DS ID: DS8044 Title: Prabodhasudhākara Author: Ādi Shankara Date: 1799.