1. University of Pennsylvania, Ms. Coll 390, Item 2071 DS ID: DS9142 Title: Ānvīkṣikītattvavivaraṇa Author: Viśvanātha Nyāyapañcānana Bhaṭṭācārya Date: circa 1700-1850.
2. University of Pennsylvania, Ms. Coll 390, Item 2686 DS ID: DS9465 Title: Ānvīkṣikītattvavivaraṇa Author: Jānakīnātha Bhaṭṭācārya Date: circa 1700-1850.