1. University of Pennsylvania, Ms. Coll 390, Item 1121 DS ID: DS8289 Title: Jñānabodhaprakaraṇa Date: 1876.
2. University of Pennsylvania, Ms. Coll 390, Item 1122 DS ID: DS8290 Title: Vākyavr̥tti Author: Ādi Shankara Date: 1876.